def model_fitting(source_img, prepped_img, subject_info, task):
taskdir = os.path.join(outputdir, task)
if not os.path.exists(taskdir):
os.mkdir(taskdir)
# skull strip the preprocessed BOLD
bet = fsl.BET()
bet.inputs.in_file = prepped_img
bet.inputs.frac = 0.7
bet.inputs.functional = True
bet.inputs.out_file = os.path.join(taskdir, task + "_input_functional_bet.nii.gz")
bet_res = bet.run()
bettedinput = bet_res.outputs.out_file
task_vs_baseline = [task + " vs baseline", 'T', [task], [1]] # set up contrasts
contrasts = [task_vs_baseline]
modelfit = pe.Workflow(name='modelfit', base_dir=taskdir) # generate the model fitting workflow
modelspec = pe.Node(interface=model.SpecifyModel(), name="modelspec") # generate design info
level1design = pe.Node(interface=fsl.Level1Design(), name="level1design") # generate fsf file
modelgen = pe.MapNode( # generate .mat file
interface=fsl.FEATModel(),
name='modelgen',
iterfield=['fsf_file', 'ev_files'])
feat = pe.Node( # feat statistics
interface=fsl.FEAT(),
name='feat',
iterfield=['fsf_file'])
# put it all together
modelfit.connect([
(modelspec, level1design, [('session_info', 'session_info')]),
(level1design, modelgen, [('fsf_files', 'fsf_file'), ('ev_files', 'ev_files')]),
(level1design, feat, [('fsf_files', 'fsf_file')])])
# define inputs to workflow
modelspec.inputs.input_units = 'secs'
modelspec.inputs.functional_runs = bettedinput
modelspec.inputs.time_repetition = source_img.entities['RepetitionTime']
modelspec.inputs.high_pass_filter_cutoff = 90
modelspec.inputs.subject_info = subject_info
level1design.inputs.interscan_interval = source_img.entities['RepetitionTime']
level1design.inputs.bases = {'gamma': {'gammasigma': 3, 'gammadelay': 6, 'derivs': True}}
level1design.inputs.contrasts = contrasts
level1design.inputs.model_serial_correlations = True
# Run the model-fitting pipeline. Main outputs are a feat directory (w/ functional img) and a design.mat file
res = modelfit.run()
# outputs
feat_dir = list(res.nodes)[3].result.outputs.feat_dir
thresh_img = feat_dir + "/thresh_zstat1.nii.gz"
return thresh_img
def l1(
preprocessing_dir,
highpass_sigma=225,
include={},
exclude={},
keep_work=False,
l1_dir="",
nprocs=10,
mask="/home/chymera/ni_data/templates/ds_QBI_chr_bin.nii.gz",
per_stimulus_contrast=False,
habituation="",
tr=1,
workflow_name="generic",
):
"""Calculate subject level GLM statistics.
Parameters
----------
include : dict
A dictionary with any combination of "sessions", "subjects", "trials" as keys and corresponding identifiers as values.
If this is specified ony matching entries will be included in the analysis.
exclude : dict
A dictionary with any combination of "sessions", "subjects", "trials" as keys and corresponding identifiers as values.
If this is specified ony non-matching entries will be included in the analysis.
habituation : string
One value of "confound", "in_main_contrast", "separate_contrast", "" indicating how the habituation regressor should be handled.
"" or any other value which evaluates to False will mean no habituation regressor is used int he model
"""
preprocessing_dir = path.expanduser(preprocessing_dir)
if not l1_dir:
l1_dir = path.abspath(path.join(preprocessing_dir, "..", "..", "l1"))
datafind = nio.DataFinder()
datafind.inputs.root_paths = preprocessing_dir
datafind.inputs.match_regex = '.+/sub-(?P<sub>.+)/ses-(?P<ses>.+)/func/.*?_trial-(?P<scan>.+)\.nii.gz'
datafind_res = datafind.run()
iterfields = zip(*[
datafind_res.outputs.sub, datafind_res.outputs.ses,
datafind_res.outputs.scan
])
if include:
iterfields = iterfield_selector(iterfields, include, "include")
if exclude:
iterfields = iterfield_selector(iterfields, exclude, "exclude")
infosource = pe.Node(
interface=util.IdentityInterface(fields=['subject_session_scan']),
name="infosource")
infosource.iterables = [('subject_session_scan', iterfields)]
datafile_source = pe.Node(
name='datafile_source',
interface=util.Function(
function=sss_to_source,
input_names=inspect.getargspec(sss_to_source)[0],
output_names=['out_file']))
datafile_source.inputs.base_directory = preprocessing_dir
datafile_source.inputs.source_format = "sub-{0}/ses-{1}/func/sub-{0}_ses-{1}_trial-{2}.nii.gz"
eventfile_source = pe.Node(
name='eventfile_source',
interface=util.Function(
function=sss_to_source,
input_names=inspect.getargspec(sss_to_source)[0],
output_names=['out_file']))
eventfile_source.inputs.base_directory = preprocessing_dir
eventfile_source.inputs.source_format = "sub-{0}/ses-{1}/func/sub-{0}_ses-{1}_trial-{2}_events.tsv"
specify_model = pe.Node(interface=SpecifyModel(), name="specify_model")
specify_model.inputs.input_units = 'secs'
specify_model.inputs.time_repetition = tr
specify_model.inputs.high_pass_filter_cutoff = highpass_sigma
specify_model.inputs.one_condition_file = not per_stimulus_contrast
specify_model.inputs.habituation_regressor = bool(habituation)
level1design = pe.Node(interface=Level1Design(), name="level1design")
level1design.inputs.interscan_interval = tr
level1design.inputs.bases = {
"custom": {
"bfcustompath": "/mnt/data/ni_data/irfs/chr_beta1.txt"
}
}
# level1design.inputs.bases = {'gamma': {'derivs':False, 'gammasigma':10, 'gammadelay':5}}
level1design.inputs.orthogonalization = {
1: {
0: 0,
1: 0,
2: 0
},
2: {
0: 1,
1: 1,
2: 0
}
}
level1design.inputs.model_serial_correlations = True
if per_stimulus_contrast:
level1design.inputs.contrasts = [
('allStim', 'T', ["e0", "e1", "e2", "e3", "e4",
"e5"], [1, 1, 1, 1, 1, 1])
] #condition names as defined in specify_model
elif habituation == "separate_contrast":
level1design.inputs.contrasts = [
('allStim', 'T', ["e0"], [1]), ('allStim', 'T', ["e1"], [1])
] #condition names as defined in specify_model
elif habituation == "in_main_contrast":
level1design.inputs.contrasts = [
('allStim', 'T', ["e0", "e1"], [1, 1])
] #condition names as defined in specify_model
elif habituation == "confound":
level1design.inputs.contrasts = [
('allStim', 'T', ["e0"], [1])
] #condition names as defined in specify_model
else:
level1design.inputs.contrasts = [
('allStim', 'T', ["e0"], [1])
] #condition names as defined in specify_model
modelgen = pe.Node(interface=fsl.FEATModel(), name='modelgen')
glm = pe.Node(interface=fsl.GLM(), name='glm', iterfield='design')
glm.inputs.out_cope = "cope.nii.gz"
glm.inputs.out_varcb_name = "varcb.nii.gz"
#not setting a betas output file might lead to beta export in lieu of COPEs
glm.inputs.out_file = "betas.nii.gz"
glm.inputs.out_t_name = "t_stat.nii.gz"
glm.inputs.out_p_name = "p_stat.nii.gz"
if mask:
glm.inputs.mask = mask
cope_filename = pe.Node(
name='cope_filename',
interface=util.Function(
function=sss_to_source,
input_names=inspect.getargspec(sss_to_source)[0],
output_names=['filename']))
cope_filename.inputs.source_format = "sub-{0}_ses-{1}_trial-{2}_cope.nii.gz"
varcb_filename = pe.Node(
name='varcb_filename',
interface=util.Function(
function=sss_to_source,
input_names=inspect.getargspec(sss_to_source)[0],
output_names=['filename']))
varcb_filename.inputs.source_format = "sub-{0}_ses-{1}_trial-{2}_varcb.nii.gz"
tstat_filename = pe.Node(
name='tstat_filename',
interface=util.Function(
function=sss_to_source,
input_names=inspect.getargspec(sss_to_source)[0],
output_names=['filename']))
tstat_filename.inputs.source_format = "sub-{0}_ses-{1}_trial-{2}_tstat.nii.gz"
zstat_filename = pe.Node(
name='zstat_filename',
interface=util.Function(
function=sss_to_source,
input_names=inspect.getargspec(sss_to_source)[0],
output_names=['filename']))
zstat_filename.inputs.source_format = "sub-{0}_ses-{1}_trial-{2}_zstat.nii.gz"
pstat_filename = pe.Node(
name='pstat_filename',
interface=util.Function(
function=sss_to_source,
input_names=inspect.getargspec(sss_to_source)[0],
output_names=['filename']))
pstat_filename.inputs.source_format = "sub-{0}_ses-{1}_trial-{2}_pstat.nii.gz"
pfstat_filename = pe.Node(
name='pfstat_filename',
interface=util.Function(
function=sss_to_source,
input_names=inspect.getargspec(sss_to_source)[0],
output_names=['filename']))
pfstat_filename.inputs.source_format = "sub-{0}_ses-{1}_trial-{2}_pfstat.nii.gz"
datasink = pe.Node(nio.DataSink(), name='datasink')
datasink.inputs.base_directory = path.join(l1_dir, workflow_name)
datasink.inputs.parameterization = False
workflow_connections = [
(infosource, datafile_source, [('subject_session_scan',
'subject_session_scan')]),
(infosource, eventfile_source, [('subject_session_scan',
'subject_session_scan')]),
(eventfile_source, specify_model, [('out_file', 'event_files')]),
(datafile_source, specify_model, [('out_file', 'functional_runs')]),
(specify_model, level1design, [('session_info', 'session_info')]),
(level1design, modelgen, [('ev_files', 'ev_files')]),
(level1design, modelgen, [('fsf_files', 'fsf_file')]),
(datafile_source, glm, [('out_file', 'in_file')]),
(modelgen, glm, [('design_file', 'design')]),
(modelgen, glm, [('con_file', 'contrasts')]),
(infosource, datasink, [(('subject_session_scan', ss_to_path),
'container')]),
(infosource, cope_filename, [('subject_session_scan',
'subject_session_scan')]),
(infosource, varcb_filename, [('subject_session_scan',
'subject_session_scan')]),
(infosource, tstat_filename, [('subject_session_scan',
'subject_session_scan')]),
(infosource, zstat_filename, [('subject_session_scan',
'subject_session_scan')]),
(infosource, pstat_filename, [('subject_session_scan',
'subject_session_scan')]),
(infosource, pfstat_filename, [('subject_session_scan',
'subject_session_scan')]),
(cope_filename, glm, [('filename', 'out_cope')]),
(varcb_filename, glm, [('filename', 'out_varcb_name')]),
(tstat_filename, glm, [('filename', 'out_t_name')]),
(zstat_filename, glm, [('filename', 'out_z_name')]),
(pstat_filename, glm, [('filename', 'out_p_name')]),
(pfstat_filename, glm, [('filename', 'out_pf_name')]),
(glm, datasink, [('out_pf', '@pfstat')]),
(glm, datasink, [('out_p', '@pstat')]),
(glm, datasink, [('out_z', '@zstat')]),
(glm, datasink, [('out_t', '@tstat')]),
(glm, datasink, [('out_cope', '@cope')]),
(glm, datasink, [('out_varcb', '@varcb')]),
]
workdir_name = workflow_name + "_work"
workflow = pe.Workflow(name=workdir_name)
workflow.connect(workflow_connections)
workflow.base_dir = l1_dir
workflow.config = {
"execution": {
"crashdump_dir": path.join(l1_dir, "crashdump")
}
}
workflow.write_graph(dotfilename=path.join(workflow.base_dir, workdir_name,
"graph.dot"),
graph2use="hierarchical",
format="png")
workflow.run(plugin="MultiProc", plugin_args={'n_procs': nprocs})
if not keep_work:
shutil.rmtree(path.join(l1_dir, workdir_name))
def init_taskbased_wf(
workdir=None,
feature=None,
condition_files=None,
condition_units=None,
memcalc=MemoryCalculator(),
):
"""
create workflow to calculate a first level glm for task functional data
"""
if feature is not None:
name = f"{formatlikebids(feature.name)}_wf"
else:
name = "taskbased_wf"
workflow = pe.Workflow(name=name)
#
inputnode = pe.Node(
niu.IdentityInterface(
fields=[
"tags",
"vals",
"metadata",
"bold",
"mask",
"repetition_time",
"confounds_selected",
"condition_names",
"condition_files",
"condition_units",
]
),
name="inputnode",
)
outputnode = pe.Node(niu.IdentityInterface(fields=["resultdicts"]), name="outputnode")
if feature is not None:
inputnode.inputs.condition_names = feature.conditions
if condition_files is not None:
inputnode.inputs.condition_files = condition_files
if condition_units is not None:
inputnode.inputs.condition_units = condition_units
#
make_resultdicts_a = pe.Node(
MakeResultdicts(tagkeys=["feature"], imagekeys=["design_matrix", "contrast_matrix"]),
name="make_resultdicts_a",
)
if feature is not None:
make_resultdicts_a.inputs.feature = feature.name
workflow.connect(inputnode, "tags", make_resultdicts_a, "tags")
workflow.connect(inputnode, "vals", make_resultdicts_a, "vals")
workflow.connect(inputnode, "metadata", make_resultdicts_a, "metadata")
make_resultdicts_b = pe.Node(
MakeResultdicts(
tagkeys=["feature", "taskcontrast"],
imagekeys=["effect", "variance", "z", "dof", "mask"],
metadatakeys=["sources"],
),
name="make_resultdicts_b",
)
if feature is not None:
make_resultdicts_b.inputs.feature = feature.name
workflow.connect(inputnode, "tags", make_resultdicts_b, "tags")
workflow.connect(inputnode, "vals", make_resultdicts_b, "vals")
workflow.connect(inputnode, "metadata", make_resultdicts_b, "metadata")
workflow.connect(inputnode, "mask", make_resultdicts_b, "mask")
workflow.connect(make_resultdicts_b, "resultdicts", outputnode, "resultdicts")
#
merge_resultdicts = pe.Node(niu.Merge(2), name="merge_resultdicts")
workflow.connect(make_resultdicts_a, "resultdicts", merge_resultdicts, "in1")
workflow.connect(make_resultdicts_b, "resultdicts", merge_resultdicts, "in2")
resultdict_datasink = pe.Node(
ResultdictDatasink(base_directory=workdir), name="resultdict_datasink"
)
workflow.connect(merge_resultdicts, "out", resultdict_datasink, "indicts")
# parse condition files into three (ordered) lists
parseconditionfile = pe.Node(ParseConditionFile(), name="parseconditionfile")
workflow.connect(inputnode, "condition_names", parseconditionfile, "condition_names")
workflow.connect(inputnode, "condition_files", parseconditionfile, "in_any")
fillna = pe.Node(FillNA(), name="fillna")
workflow.connect(inputnode, "confounds_selected", fillna, "in_tsv")
# first level model specification
modelspec = pe.Node(model.SpecifyModel(), name="modelspec")
if hasattr(feature, "high_pass_filter_cutoff"):
modelspec.inputs.high_pass_filter_cutoff = feature.high_pass_filter_cutoff
else:
modelspec.inputs.high_pass_filter_cutoff = np.inf
workflow.connect(inputnode, "bold", modelspec, "functional_runs")
workflow.connect(inputnode, "condition_units", modelspec, "input_units")
workflow.connect(inputnode, "repetition_time", modelspec, "time_repetition")
workflow.connect(fillna, "out_no_header", modelspec, "realignment_parameters")
workflow.connect(parseconditionfile, "subject_info", modelspec, "subject_info")
# transform contrasts dictionary to nipype list data structure
contrasts = []
if feature is not None:
condition_names = feature.conditions
for contrast in feature.contrasts:
contrast_values = [contrast["values"].get(c, 0.0) for c in condition_names]
contrasts.append(
[contrast["name"], contrast["type"].upper(), condition_names, contrast_values]
)
contrast_names = list(map(firststr, contrasts))
make_resultdicts_b.inputs.taskcontrast = contrast_names
# generate design from first level specification
level1design = pe.Node(
fsl.Level1Design(
contrasts=contrasts,
model_serial_correlations=True,
bases={"dgamma": {"derivs": False}},
),
name="level1design",
)
workflow.connect(inputnode, "repetition_time", level1design, "interscan_interval")
workflow.connect(modelspec, "session_info", level1design, "session_info")
# generate required input files for FILMGLS from design
modelgen = pe.Node(fsl.FEATModel(), name="modelgen")
workflow.connect([(level1design, modelgen, [(("fsf_files", firststr), "fsf_file")])])
workflow.connect([(level1design, modelgen, [(("ev_files", ravel), "ev_files")])])
# calculate range of image values to determine cutoff value
stats = pe.Node(fsl.ImageStats(op_string="-R"), name="stats")
workflow.connect(inputnode, "bold", stats, "in_file")
cutoff = pe.Node(
niu.Function(input_names=["obj"], output_names=["min_val"], function=firstfloat),
name="cutoff",
)
workflow.connect(stats, "out_stat", cutoff, "obj")
# actually estimate the first level model
modelestimate = pe.Node(
fsl.FILMGLS(smooth_autocorr=True, mask_size=5),
name="modelestimate"
)
workflow.connect(inputnode, "bold", modelestimate, "in_file")
workflow.connect(cutoff, "min_val", modelestimate, "threshold")
workflow.connect(modelgen, "design_file", modelestimate, "design_file")
workflow.connect(modelgen, "con_file", modelestimate, "tcon_file")
# make dof volume
makedofvolume = pe.Node(
MakeDofVolume(), iterfield=["dof_file", "copes"], name="makedofvolume"
)
workflow.connect(modelestimate, "copes", makedofvolume, "copes")
workflow.connect(modelestimate, "dof_file", makedofvolume, "dof_file")
workflow.connect(modelestimate, "copes", make_resultdicts_b, "effect")
workflow.connect(modelestimate, "varcopes", make_resultdicts_b, "variance")
workflow.connect(modelestimate, "zstats", make_resultdicts_b, "z")
workflow.connect(makedofvolume, "out_file", make_resultdicts_b, "dof")
#
mergecolumnnames = pe.Node(niu.Merge(2), name="mergecolumnnames")
mergecolumnnames.inputs.in1 = condition_names
workflow.connect(fillna, "column_names", mergecolumnnames, "in2")
design_unvest = pe.Node(Unvest(), name="design_unvest")
workflow.connect(modelgen, "design_file", design_unvest, "in_vest")
design_tsv = pe.Node(MergeColumns(1), name="design_tsv")
workflow.connect(design_unvest, "out_no_header", design_tsv, "in1")
workflow.connect(mergecolumnnames, "out", design_tsv, "column_names1")
contrast_unvest = pe.Node(Unvest(), name="contrast_unvest")
workflow.connect(modelgen, "con_file", contrast_unvest, "in_vest")
contrast_tsv = pe.Node(MergeColumns(1), name="contrast_tsv")
contrast_tsv.inputs.row_index = contrast_names
workflow.connect(contrast_unvest, "out_no_header", contrast_tsv, "in1")
workflow.connect(mergecolumnnames, "out", contrast_tsv, "column_names1")
workflow.connect(design_tsv, "out_with_header", make_resultdicts_a, "design_matrix")
workflow.connect(contrast_tsv, "out_with_header", make_resultdicts_a, "contrast_matrix")
return workflow
def seed_fc(
preprocessing_dir,
exclude={},
habituation='confound',
highpass_sigma=225,
lowpass_sigma=False,
include={},
keep_work=False,
out_dir="",
mask="",
match_regex='sub-(?P<sub>[a-zA-Z0-9]+)/ses-(?P<ses>[a-zA-Z0-9]+)/func/.*?_task-(?P<task>[a-zA-Z0-9]+)_acq-(?P<acq>[a-zA-Z0-9]+)_(?P<mod>[a-zA-Z0-9]+)\.(?:tsv|nii|nii\.gz)',
nprocs=N_PROCS,
tr=1,
workflow_name="generic",
modality="cbv",
):
"""Calculate subject level seed-based functional connectivity via the `fsl_glm` command.
Parameters
----------
exclude : dict
A dictionary with any combination of "sessions", "subjects", "tasks" as keys and corresponding identifiers as values.
If this is specified matching entries will be excluded in the analysis.
habituation : {"", "confound", "separate_contrast", "in_main_contrast"}, optional
How the habituation regressor should be handled.
Anything which evaluates as False (though we recommend "") means no habituation regressor will be introduced.
highpass_sigma : int, optional
Highpass threshold (in seconds).
include : dict
A dictionary with any combination of "sessions", "subjects", "tasks" as keys and corresponding identifiers as values.
If this is specified only matching entries will be included in the analysis.
keep_work : bool, optional
Whether to keep the work directory (containing all the intermediary workflow steps, as managed by nipypye).
This is useful for debugging and quality control.
out_dir : str, optional
Path to the directory inside which both the working directory and the output directory will be created.
mask : str, optional
Path to the brain mask which shall be used to define the brain volume in the analysis.
This has to point to an existing NIfTI file containing zero and one values only.
match_regex : str, optional
Regex matching pattern by which to select input files. Has to contain groups named "sub", "ses", "acq", "task", and "mod".
n_procs : int, optional
Maximum number of processes which to simultaneously spawn for the workflow.
If not explicitly defined, this is automatically calculated from the number of available cores and under the assumption that the workflow will be the main process running for the duration that it is running.
tr : int, optional
Repetition time, in seconds.
workflow_name : str, optional
Name of the workflow; this will also be the name of the final output directory produced under `out_dir`.
"""
preprocessing_dir = path.abspath(path.expanduser(preprocessing_dir))
if not out_dir:
out_dir = path.join(bids_base, 'l1')
else:
out_dir = path.abspath(path.expanduser(out_dir))
datafind = nio.DataFinder()
datafind.inputs.root_paths = preprocessing_dir
datafind.inputs.match_regex = match_regex
datafind_res = datafind.run()
out_paths = [
path.abspath(path.expanduser(i))
for i in datafind_res.outputs.out_paths
]
data_selection = zip(*[
datafind_res.outputs.sub, datafind_res.outputs.ses,
datafind_res.outputs.acq, datafind_res.outputs.task,
datafind_res.outputs.mod, out_paths
])
data_selection = [list(i) for i in data_selection]
data_selection = pd.DataFrame(data_selection,
columns=('subject', 'session', 'acquisition',
'task', 'modality', 'path'))
if exclude:
for key in exclude:
data_selection = data_selection[~data_selection[key].
isin(exclude[key])]
if include:
for key in include:
data_selection = data_selection[data_selection[key].isin(
include[key])]
bids_dictionary = data_selection[
data_selection['modality'] ==
modality].drop_duplicates().T.to_dict().values()
infosource = pe.Node(
interface=util.IdentityInterface(fields=['bids_dictionary']),
name="infosource")
infosource.iterables = [('bids_dictionary', bids_dictionary)]
datafile_source = pe.Node(
name='datafile_source',
interface=util.Function(
function=select_from_datafind_df,
input_names=inspect.getargspec(select_from_datafind_df)[0],
output_names=['out_file']))
datafile_source.inputs.bids_dictionary_override = {'modality': modality}
datafile_source.inputs.df = data_selection
seed_timecourse = pe.Node(
name='seed_timecourse',
interface=util.Function(
function=select_from_datafind_df,
input_names=inspect.getargspec(select_from_datafind_df)[0],
output_names=['out_file']))
specify_model = pe.Node(interface=SpecifyModel(), name="specify_model")
specify_model.inputs.input_units = 'secs'
specify_model.inputs.time_repetition = tr
specify_model.inputs.high_pass_filter_cutoff = highpass_sigma
specify_model.inputs.habituation_regressor = bool(habituation)
level1design = pe.Node(interface=Level1Design(), name="level1design")
level1design.inputs.interscan_interval = tr
if bf_path:
bf_path = path.abspath(path.expanduser(bf_path))
level1design.inputs.bases = {"custom": {"bfcustompath": bf_path}}
# level1design.inputs.bases = {'gamma': {'derivs':False, 'gammasigma':10, 'gammadelay':5}}
level1design.inputs.orthogonalization = {
1: {
0: 0,
1: 0,
2: 0
},
2: {
0: 1,
1: 1,
2: 0
}
}
level1design.inputs.model_serial_correlations = True
if habituation == "separate_contrast":
level1design.inputs.contrasts = [
('allStim', 'T', ["e0"], [1]), ('allStim', 'T', ["e1"], [1])
] #condition names as defined in specify_model
elif habituation == "in_main_contrast":
level1design.inputs.contrasts = [
('allStim', 'T', ["e0", "e1"], [1, 1])
] #condition names as defined in specify_model
elif habituation == "confound" or not habituation:
level1design.inputs.contrasts = [
('allStim', 'T', ["e0"], [1])
] #condition names as defined in specify_model
else:
raise ValueError(
'The value you have provided for the `habituation` parameter, namely "{}", is invalid. Please choose one of: {"confound","in_main_contrast","separate_contrast"}'
.format(habituation))
modelgen = pe.Node(interface=fsl.FEATModel(), name='modelgen')
modelgen.inputs.ignore_exception = True
glm = pe.Node(interface=fsl.GLM(), name='glm', iterfield='design')
glm.inputs.out_cope = "cope.nii.gz"
glm.inputs.out_varcb_name = "varcb.nii.gz"
#not setting a betas output file might lead to beta export in lieu of COPEs
glm.inputs.out_file = "betas.nii.gz"
glm.inputs.out_t_name = "t_stat.nii.gz"
glm.inputs.out_p_name = "p_stat.nii.gz"
if mask:
glm.inputs.mask = path.abspath(path.expanduser(mask))
glm.inputs.ignore_exception = True
cope_filename = pe.Node(
name='cope_filename',
interface=util.Function(
function=bids_dict_to_source,
input_names=inspect.getargspec(bids_dict_to_source)[0],
output_names=['filename']))
cope_filename.inputs.source_format = "sub-{subject}_ses-{session}_task-{task}_acq-{acquisition}_{modality}_cope.nii.gz"
varcb_filename = pe.Node(
name='varcb_filename',
interface=util.Function(
function=bids_dict_to_source,
input_names=inspect.getargspec(bids_dict_to_source)[0],
output_names=['filename']))
varcb_filename.inputs.source_format = "sub-{subject}_ses-{session}_task-{task}_acq-{acquisition}_{modality}_varcb.nii.gz"
tstat_filename = pe.Node(
name='tstat_filename',
interface=util.Function(
function=bids_dict_to_source,
input_names=inspect.getargspec(bids_dict_to_source)[0],
output_names=['filename']))
tstat_filename.inputs.source_format = "sub-{subject}_ses-{session}_task-{task}_acq-{acquisition}_{modality}_tstat.nii.gz"
zstat_filename = pe.Node(
name='zstat_filename',
interface=util.Function(
function=bids_dict_to_source,
input_names=inspect.getargspec(bids_dict_to_source)[0],
output_names=['filename']))
zstat_filename.inputs.source_format = "sub-{subject}_ses-{session}_task-{task}_acq-{acquisition}_{modality}_zstat.nii.gz"
pstat_filename = pe.Node(
name='pstat_filename',
interface=util.Function(
function=bids_dict_to_source,
input_names=inspect.getargspec(bids_dict_to_source)[0],
output_names=['filename']))
pstat_filename.inputs.source_format = "sub-{subject}_ses-{session}_task-{task}_acq-{acquisition}_{modality}_pstat.nii.gz"
pfstat_filename = pe.Node(
name='pfstat_filename',
interface=util.Function(
function=bids_dict_to_source,
input_names=inspect.getargspec(bids_dict_to_source)[0],
output_names=['filename']))
pfstat_filename.inputs.source_format = "sub-{subject}_ses-{session}_task-{task}_acq-{acquisition}_{modality}_pfstat.nii.gz"
datasink = pe.Node(nio.DataSink(), name='datasink')
datasink.inputs.base_directory = path.join(out_dir, workflow_name)
datasink.inputs.parameterization = False
workflow_connections = [
(infosource, datafile_source, [('bids_dictionary', 'bids_dictionary')
]),
(infosource, eventfile_source, [('bids_dictionary', 'bids_dictionary')
]),
(eventfile_source, specify_model, [('out_file', 'event_files')]),
(specify_model, level1design, [('session_info', 'session_info')]),
(level1design, modelgen, [('ev_files', 'ev_files')]),
(level1design, modelgen, [('fsf_files', 'fsf_file')]),
(modelgen, glm, [('design_file', 'design')]),
(modelgen, glm, [('con_file', 'contrasts')]),
(infosource, datasink, [(('bids_dictionary', bids_dict_to_dir),
'container')]),
(infosource, cope_filename, [('bids_dictionary', 'bids_dictionary')]),
(infosource, varcb_filename, [('bids_dictionary', 'bids_dictionary')]),
(infosource, tstat_filename, [('bids_dictionary', 'bids_dictionary')]),
(infosource, zstat_filename, [('bids_dictionary', 'bids_dictionary')]),
(infosource, pstat_filename, [('bids_dictionary', 'bids_dictionary')]),
(infosource, pfstat_filename, [('bids_dictionary', 'bids_dictionary')
]),
(cope_filename, glm, [('filename', 'out_cope')]),
(varcb_filename, glm, [('filename', 'out_varcb_name')]),
(tstat_filename, glm, [('filename', 'out_t_name')]),
(zstat_filename, glm, [('filename', 'out_z_name')]),
(pstat_filename, glm, [('filename', 'out_p_name')]),
(pfstat_filename, glm, [('filename', 'out_pf_name')]),
(glm, datasink, [('out_pf', '@pfstat')]),
(glm, datasink, [('out_p', '@pstat')]),
(glm, datasink, [('out_z', '@zstat')]),
(glm, datasink, [('out_t', '@tstat')]),
(glm, datasink, [('out_cope', '@cope')]),
(glm, datasink, [('out_varcb', '@varcb')]),
]
if highpass_sigma or lowpass_sigma:
bandpass = pe.Node(interface=fsl.maths.TemporalFilter(),
name="bandpass")
bandpass.inputs.highpass_sigma = highpass_sigma
if lowpass_sigma:
bandpass.inputs.lowpass_sigma = lowpass_sigma
else:
bandpass.inputs.lowpass_sigma = tr
workflow_connections.extend([
(datafile_source, bandpass, [('out_file', 'in_file')]),
(bandpass, specify_model, [('out_file', 'functional_runs')]),
(bandpass, glm, [('out_file', 'in_file')]),
])
else:
workflow_connections.extend([
(datafile_source, specify_model, [('out_file', 'functional_runs')
]),
(datafile_source, glm, [('out_file', 'in_file')]),
])
workdir_name = workflow_name + "_work"
workflow = pe.Workflow(name=workdir_name)
workflow.connect(workflow_connections)
workflow.base_dir = out_dir
workflow.config = {
"execution": {
"crashdump_dir": path.join(out_dir, "crashdump")
}
}
workflow.write_graph(dotfilename=path.join(workflow.base_dir, workdir_name,
"graph.dot"),
graph2use="hierarchical",
format="png")
workflow.run(plugin="MultiProc", plugin_args={'n_procs': nprocs})
if not keep_work:
shutil.rmtree(path.join(out_dir, workdir_name))
# model specification
modelspec = Node(modelgen.SpecifyModel(subject_info=subject_info,
input_units='secs',
time_repetition=TR,
high_pass_filter_cutoff=100),
name="modelspec")
# first-level design
level1design = Node(fsl.Level1Design(bases={'dgamma':{'derivs': True}},
interscan_interval=TR,
model_serial_correlations=True,
contrasts=contrast_list),
name="level1design")
# creating all the other files necessary to run the model
modelgen = Node(fsl.FEATModel(),
name='modelgen')
# then running through FEAT
feat = Node(fsl.FEAT(),
name="feat")
# creating datasink to collect outputs
datasink = Node(DataSink(base_directory=outDir),
name='datasink')
## Use the following DataSink output substitutions
substitutions = [('_subject_id_', 'sub-'),
('_subsession_id_', '/ses-')
]
SPM-specific design information.
"""
modelspec = pe.Node(interface=model.SpecifyModel(), name="modelspec")
"""
d. Use :class:`nipype.interfaces.fsl.Level1Design` to generate a
run specific fsf file for analysis
"""
level1design = pe.Node(interface=fsl.Level1Design(), name="fsfdesign")
"""
e. Use :class:`nipype.interfaces.fsl.FEATModel` to generate a
run specific mat file for use by FILMGLS
"""
modelgen = pe.Node(interface=fsl.FEATModel(), name='modelgen')
"""
f. Use :class:`nipype.interfaces.fsl.FILMGLS` to estimate a model
specified by a mat file and a functional run
"""
modelestimate = pe.Node(interface=fsl.FILMGLS(), name='modelestimate')
#iterfield = ['design_file','in_file'])
modelfit.connect([
(modelspec, level1design, [('session_info', 'session_info')]),
(level1design, modelgen, [('fsf_files', 'fsf_file'),
('ev_files', 'ev_files')]),
(modelgen, modelestimate, [('design_file', 'design_file')]),
])
"""
# model specification
modelspec = Node(modelgen.SpecifyModel(input_units='secs',
time_repetition=TR,
high_pass_filter_cutoff=100),
name="modelspec")
# first-level design
level1design = Node(fsl.Level1Design(bases={'dgamma': {
'derivs': True
}},
interscan_interval=TR,
model_serial_correlations=True),
name="level1design")
# creating all the other files necessary to run the model
modelgen = Node(fsl.FEATModel(), name='modelgen')
# then running through FEAT
feat = Node(fsl.FEAT(), name="feat")
# creating datasink to collect outputs
datasink = Node(DataSink(base_directory=outDir), name='datasink')
## Use the following DataSink output substitutions
substitutions = [('_subject_id_', '/sub-'), ('_run_id_', '/run-')]
datasink.inputs.substitutions = substitutions
###########
#
# SETTING UP THE WORKFLOW NODES
def create_nuisance_modelfit_workflow(name='modelfit', f_contrasts=False):
"""
Create an FSL modelfitting workflow that returns also
residual4d and sigmasquareds.
Example
-------
# >>> modelfit = create_modelfit_workflow()
# >>> modelfit.base_dir = '.'
# >>> info = dict()
# >>> modelfit.inputs.inputspec.session_info = info
# >>> modelfit.inputs.inputspec.interscan_interval = 3.
# >>> modelfit.inputs.inputspec.film_threshold = 1000
# >>> modelfit.run() #doctest: +SKIP
Inputs::
inputspec.session_info : info generated by modelgen.SpecifyModel
inputspec.interscan_interval : interscan interval
inputspec.contrasts : list of contrasts
inputspec.film_threshold : image threshold for FILM estimation
inputspec.model_serial_correlations
inputspec.bases
Outputs::
outputspec.copes
outputspec.varcopes
outputspec.dof_file
outputspec.pfiles
outputspec.zfiles
outputspec.parameter_estimates
outputspec.residual4d
outputspec.sigmasquareds
"""
version = 0
if fsl.Info.version() and \
LooseVersion(fsl.Info.version()) > LooseVersion('5.0.6'):
version = 507
modelfit = pe.Workflow(name=name)
"""
Create the nodes
"""
inputspec = pe.Node(util.IdentityInterface(fields=[
'session_info', 'interscan_interval', 'contrasts', 'film_threshold',
'functional_data', 'bases', 'model_serial_correlations'
]),
name='inputspec')
level1design = pe.Node(interface=fsl.Level1Design(), name="level1design")
modelgen = pe.MapNode(interface=fsl.FEATModel(),
name='modelgen',
iterfield=['fsf_file', 'ev_files'])
if version < 507:
modelestimate = pe.MapNode(interface=fsl.FILMGLS(smooth_autocorr=True,
mask_size=5),
name='modelestimate',
iterfield=['design_file', 'in_file'])
else:
if f_contrasts:
iterfield = ['design_file', 'in_file', 'tcon_file', 'fcon_file']
else:
iterfield = ['design_file', 'in_file', 'tcon_file']
modelestimate = pe.MapNode(interface=fsl.FILMGLS(smooth_autocorr=True,
mask_size=5),
name='modelestimate',
iterfield=iterfield)
if version < 507:
if f_contrasts:
iterfield = [
'tcon_file', 'fcon_file', 'param_estimates', 'sigmasquareds',
'corrections', 'dof_file'
]
else:
iterfield = [
'tcon_file', 'param_estimates', 'sigmasquareds', 'corrections',
'dof_file'
]
conestimate = pe.MapNode(interface=fsl.ContrastMgr(),
name='conestimate',
iterfield=[
'tcon_file', 'fcon_file',
'param_estimates', 'sigmasquareds',
'corrections', 'dof_file'
])
if f_contrasts:
iterfield = ['in1', 'in2']
else:
iterfield = ['in1']
merge_contrasts = pe.MapNode(interface=util.Merge(2),
name='merge_contrasts',
iterfield=iterfield)
ztopval = pe.MapNode(interface=fsl.ImageMaths(op_string='-ztop',
suffix='_pval'),
nested=True,
name='ztop',
iterfield=['in_file'])
outputspec = pe.Node(util.IdentityInterface(fields=[
'copes', 'varcopes', 'dof_file', 'pfiles', 'zfiles',
'parameter_estimates', 'residual4d', 'sigmasquareds'
]),
name='outputspec')
"""
Setup the connections
"""
modelfit.connect([
(inputspec, level1design,
[('interscan_interval', 'interscan_interval'),
('session_info', 'session_info'), ('contrasts', 'contrasts'),
('bases', 'bases'),
('model_serial_correlations', 'model_serial_correlations')]),
(inputspec, modelestimate, [('film_threshold', 'threshold'),
('functional_data', 'in_file')]),
(level1design, modelgen, [('fsf_files', 'fsf_file'),
('ev_files', 'ev_files')]),
(modelgen, modelestimate, [('design_file', 'design_file')]),
# connect also residual4d and sigmasquared
(modelestimate, outputspec, [('param_estimates',
'parameter_estimates'),
('dof_file', 'dof_file'),
('residual4d', 'residual4d'),
('sigmasquareds', 'sigmasquareds')]),
])
if version < 507:
modelfit.connect([
(modelgen, conestimate, [('con_file', 'tcon_file'),
('fcon_file', 'fcon_file')]),
(modelestimate, conestimate, [('param_estimates',
'param_estimates'),
('sigmasquareds', 'sigmasquareds'),
('corrections', 'corrections'),
('dof_file', 'dof_file')]),
(conestimate, outputspec, [('copes', 'copes'),
('varcopes', 'varcopes')]),
])
else:
modelfit.connect([
(modelgen, modelestimate, [('con_file', 'tcon_file'),
('fcon_file', 'fcon_file')]),
(modelestimate, outputspec, [('copes', 'copes'),
('varcopes', 'varcopes')]),
])
return modelfit
def L1PIPE():
# ---1) Import modules
import nipype.interfaces.fsl as fsl
import nipype.pipeline.engine as pe
import nipype.algorithms.modelgen as model
import glob
from nipype import Function
import matplotlib
import nipype.interfaces.utility as util
import os
#--- 2) Specify model node
specify_model = pe.Node(interface=model.SpecifyModel(), name="SPECIFY_MODEL")
specify_model.inputs.input_units = 'secs'
runs=raw_input('Please drag in the pre-processsed functional data\n')
runs2= runs.strip('\'"')
NIFTIDIR=os.path.split(runs2)[0]
specify_model.inputs.functional_runs = [runs2]
specify_model.inputs.time_repetition = float(raw_input('Enter the TR (s)\n'))
specify_model.inputs.high_pass_filter_cutoff = float(raw_input('Enter the High pass filter cutoff (s)\n'))
EVENTFILES=raw_input('Please drag in the directory of 3 column event files')
EVENTFILES2=EVENTFILES.strip('\'"')
EVENTFILESLIST=glob.glob(EVENTFILES2 + '/*')
specify_model.inputs.event_files=sorted(EVENTFILESLIST)
#--- 3) Level 1 design node.
Designer=pe.Node(interface=fsl.Level1Design(),name='DESIGN')
Designer.inputs.interscan_interval = float(specify_model.inputs.time_repetition)
Designer.inputs.bases = {'dgamma':{'derivs': False}}
Designer.inputs.model_serial_correlations=bool(0)
#--- 4) Make some contrasts
cont1=('Task', 'T', ['B1INVFEAR.RUN001', 'B1INVINVFEAR.RUN001', 'B1INVINVNEUT.RUN001', 'B1INVNEUT.RUN001', 'B1SCFEAR.RUN001', 'B1SCNEUT.RUN001', 'B1UPFEAR.RUN001', 'B1UPINVFEAR.RUN001', 'B1UPINVNEUT.RUN001', 'B1UPNEUT.RUN001'], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1])
cont2=('Up', 'T', ['B1INVFEAR.RUN001', 'B1INVINVFEAR.RUN001', 'B1INVINVNEUT.RUN001', 'B1INVNEUT.RUN001', 'B1SCFEAR.RUN001', 'B1SCNEUT.RUN001', 'B1UPFEAR.RUN001', 'B1UPINVFEAR.RUN001', 'B1UPINVNEUT.RUN001', 'B1UPNEUT.RUN001'], [0, 0, 0, 0, 0, 0, 1, 0, 0, 1])
cont3=('SC', 'T', ['B1INVFEAR.RUN001', 'B1INVINVFEAR.RUN001', 'B1INVINVNEUT.RUN001', 'B1INVNEUT.RUN001', 'B1SCFEAR.RUN001', 'B1SCNEUT.RUN001', 'B1UPFEAR.RUN001', 'B1UPINVFEAR.RUN001', 'B1UPINVNEUT.RUN001', 'B1UPNEUT.RUN001'], [0, 0, 0, 0, 1, 1, 0, 0, 0, 0])
cont4=('UpvSC', 'T', ['B1INVFEAR.RUN001', 'B1INVINVFEAR.RUN001', 'B1INVINVNEUT.RUN001', 'B1INVNEUT.RUN001', 'B1SCFEAR.RUN001', 'B1SCNEUT.RUN001', 'B1UPFEAR.RUN001', 'B1UPINVFEAR.RUN001', 'B1UPINVNEUT.RUN001', 'B1UPNEUT.RUN001'], [0, 0, 0, 0, -1, -1, 1, 0, 0, 1])
Designer.inputs.contrasts=[cont1, cont2, cont3, cont4]
#--- 5) FSL model node
Model=pe.Node(interface=fsl.FEATModel(),name='FEATMODEL')
#--- 6) FILM GSL node
fgls=pe.Node(interface=fsl.FILMGLS(),name='FILM_GLS')
fgls.inputs.in_file=runs2
#--- 7) outputnode for the design image (gets binned otherwise)
outputnode = pe.Node(interface=util.IdentityInterface(fields=['im','cope','varcope','dof','resid','params','sigmas']),name='outputnode')
#--- 8) Plotting node
def plot(in_file):
from nilearn import image
from nilearn import plotting
import matplotlib
display=plotting.plot_stat_map(stat_map_img = in_file, display_mode='z', cut_coords=10, threshold=float(0))
matplotlib.pyplot.show()
plotter=pe.MapNode(Function(input_names=['in_file'],output_names='display',function=plot),iterfield=['in_file'],name='PLOTTER')
workflow = pe.Workflow(name='L1PIPE')
workflow.connect(specify_model,'session_info',Designer,'session_info')
workflow.connect(Designer,'fsf_files',Model,'fsf_file')
workflow.connect(Designer,'ev_files',Model,'ev_files')
workflow.connect(Model,'design_file',fgls,'design_file')
workflow.connect(Model,'con_file',fgls,'tcon_file')
workflow.connect(Model,'design_image',outputnode,'im')
# Feed the z stats to the plotter.
workflow.connect(fgls,'zstats',plotter,'in_file')
workflow.connect(fgls,'copes',outputnode,'cope')
workflow.connect(fgls,'varcopes',outputnode,'varcope')
workflow.connect(fgls,'dof_file',outputnode,'dof')
workflow.connect(fgls,'residual4d',outputnode,'resid')
workflow.connect(fgls,'param_estimates',outputnode,'params')
workflow.connect(fgls,'sigmasquareds',outputnode,'sigmas')
workflow.base_dir = NIFTIDIR
workflow.write_graph(graph2use='exec')
workflow.run()
def init_glm_wf(conditions,
contrasts,
repetition_time,
use_mov_pars,
name="glm"):
"""
create workflow to calculate a first level glm for task functional data
:param conditions: dictionary of conditions with onsets and durations
by condition names
:param contrasts: dictionary of contrasts by names
:param repetition_time: repetition time
:param use_mov_pars: if true, regress out movement parameters when
calculating the glm
:param name: workflow name (Default value = "glm")
"""
workflow = pe.Workflow(name=name)
# inputs are the bold file, the mask file and the confounds file
# that contains the movement parameters
inputnode = pe.Node(niu.IdentityInterface(
fields=["bold_file", "mask_file", "confounds_file"]),
name="inputnode")
# transform (unordered) conditions dictionary into three (ordered) lists
names = list(conditions.keys())
onsets = [conditions[k]["onsets"] for k in names]
durations = [conditions[k]["durations"] for k in names]
# first level model specification
modelspec = pe.Node(interface=model.SpecifyModel(
input_units="secs",
high_pass_filter_cutoff=128.,
time_repetition=repetition_time,
subject_info=Bunch(conditions=names,
onsets=onsets,
durations=durations)),
name="modelspec")
# transform contrasts dictionary to nipype list data structure
contrasts_ = [[k, "T"] +
[list(i) for i in zip(*[(n, val) for n, val in v.items()])]
for k, v in contrasts.items()]
connames = [k[0] for k in contrasts_]
# outputs are cope, varcope and zstat for each contrast and a dof_file
outputnode = pe.Node(niu.IdentityInterface(fields=sum(
[["%s_img" % conname,
"%s_varcope" % conname,
"%s_zstat" % conname] for conname in connames], []) + ["dof_file"]),
name="outputnode")
outputnode._interface.names = connames
# generate design from first level specification
level1design = pe.Node(interface=fsl.Level1Design(
contrasts=contrasts_,
interscan_interval=repetition_time,
model_serial_correlations=True,
bases={"dgamma": {
"derivs": False
}}),
name="level1design")
# generate required input files for FILMGLS from design
modelgen = pe.Node(interface=fsl.FEATModel(),
name="modelgen",
iterfield=["fsf_file", "ev_files"])
# calculate range of image values to determine cutoff value
# for FILMGLS
stats = pe.Node(interface=fsl.ImageStats(op_string="-R"), name="stats")
# actuallt estimate the firsy level model
modelestimate = pe.Node(interface=fsl.FILMGLS(smooth_autocorr=True,
mask_size=5),
name="modelestimate",
iterfield=["design_file", "in_file", "tcon_file"])
# mask regression outputs
maskimgs = pe.MapNode(interface=fsl.ApplyMask(),
name="maskimgs",
iterfield=["in_file"])
maskvarcopes = pe.MapNode(interface=fsl.ApplyMask(),
name="maskvarcopes",
iterfield=["in_file"])
maskzstats = pe.MapNode(interface=fsl.ApplyMask(),
name="maskzstats",
iterfield=["in_file"])
# split regression outputs by name
splitimgs = pe.Node(interface=niu.Split(splits=[1
for conname in connames]),
name="splitimgs")
splitvarcopes = pe.Node(
interface=niu.Split(splits=[1 for conname in connames]),
name="splitvarcopes")
splitzstats = pe.Node(
interface=niu.Split(splits=[1 for conname in connames]),
name="splitzstats")
# pass movement parameters to glm model specification if requested
c = [("bold_file", "functional_runs")]
if use_mov_pars:
c.append(("confounds_file", "realignment_parameters"))
workflow.connect([
(inputnode, modelspec, c),
(inputnode, modelestimate, [("bold_file", "in_file")]),
(modelspec, level1design, [("session_info", "session_info")]),
(level1design, modelgen, [("fsf_files", "fsf_file"),
("ev_files", "ev_files")]),
(inputnode, stats, [("bold_file", "in_file")]),
(stats, modelestimate, [(("out_stat", get_float), "threshold")]),
(modelgen, modelestimate, [("design_file", "design_file"),
("con_file", "tcon_file")]),
(inputnode, maskimgs, [("mask_file", "mask_file")]),
(inputnode, maskvarcopes, [("mask_file", "mask_file")]),
(inputnode, maskzstats, [("mask_file", "mask_file")]),
(modelestimate, maskimgs, [
(("copes", flatten), "in_file"),
]),
(modelestimate, maskvarcopes, [
(("varcopes", flatten), "in_file"),
]),
(modelestimate, maskzstats, [
(("zstats", flatten), "in_file"),
]),
(modelestimate, outputnode, [("dof_file", "dof_file")]),
(maskimgs, splitimgs, [
("out_file", "inlist"),
]),
(maskvarcopes, splitvarcopes, [
("out_file", "inlist"),
]),
(maskzstats, splitzstats, [
("out_file", "inlist"),
]),
])
# connect outputs named for the contrasts
for i, conname in enumerate(connames):
workflow.connect(splitimgs, "out%i" % (i + 1), outputnode,
"%s_img" % conname)
workflow.connect(splitvarcopes, "out%i" % (i + 1), outputnode,
"%s_varcope" % conname)
workflow.connect(splitzstats, "out%i" % (i + 1), outputnode,
"%s_zstat" % conname)
return workflow, connames
#Makes a model specification compatible with spm/fsl designers.
NodeHash_1e7a3420 = pe.MapNode(interface = modelgen.SpecifyModel(), name = 'NodeName_1e7a3420', iterfield = ['functional_runs', 'subject_info'])
NodeHash_1e7a3420.inputs.high_pass_filter_cutoff = 0
NodeHash_1e7a3420.inputs.input_units = 'secs'
NodeHash_1e7a3420.inputs.time_repetition = 2.0
#Generate FEAT specific files
NodeHash_9bb0d40 = pe.MapNode(interface = fsl.Level1Design(), name = 'NodeName_9bb0d40', iterfield = ['session_info'])
NodeHash_9bb0d40.inputs.bases = {'dgamma':{'derivs': False}}
NodeHash_9bb0d40.inputs.contrasts = [('con-incon', 'T', ['congruent_correct', 'congruent_correct'], [-1, 1])]
NodeHash_9bb0d40.inputs.interscan_interval = 2.0
NodeHash_9bb0d40.inputs.model_serial_correlations = True
#Wraps command **feat_model**
NodeHash_6b33f50 = pe.MapNode(interface = fsl.FEATModel(), name = 'NodeName_6b33f50', iterfield = ['ev_files', 'fsf_file'])
#Wraps command **film_gls**
NodeHash_2762fb60 = pe.MapNode(interface = fsl.FILMGLS(), name = 'NodeName_2762fb60', iterfield = ['design_file', 'in_file', 'tcon_file'])
#Wraps command **fslmaths**
NodeHash_2df82970 = pe.MapNode(interface = fsl.MeanImage(), name = 'NodeName_2df82970', iterfield = ['in_file'])
NodeHash_2df82970.inputs.dimension = 'T'
#Generic datasink module to store structured outputs
NodeHash_33a4bec0 = pe.Node(interface = io.DataSink(), name = 'NodeName_33a4bec0')
NodeHash_33a4bec0.inputs.base_directory = '/tmp/FIRSTLEVEL'
#Basic interface class to select specific elements from a list
NodeHash_7caa820 = pe.MapNode(interface = utility.Select(), name = 'NodeName_7caa820', iterfield = ['inlist'])
NodeHash_7caa820.inputs.index = 0
NodeHash_214dcae0.inputs.input_units = 'secs'
NodeHash_214dcae0.inputs.time_repetition = 2.0
#Generate FEAT specific files
NodeHash_2087a210 = pe.MapNode(interface=fsl.Level1Design(),
name='NodeName_2087a210',
iterfield=['session_info'])
NodeHash_2087a210.inputs.bases = {'dgamma': {'derivs': False}}
NodeHash_2087a210.inputs.contrasts = [
('con-incon', 'T', ['congruent_correct', 'congruent_correct'], [-1, 1])
]
NodeHash_2087a210.inputs.interscan_interval = 2.0
NodeHash_2087a210.inputs.model_serial_correlations = True
#Wraps command **feat_model**
NodeHash_219c0190 = pe.MapNode(interface=fsl.FEATModel(),
name='NodeName_219c0190',
iterfield=['ev_files', 'fsf_file'])
#Wraps command **film_gls**
NodeHash_215cb480 = pe.MapNode(
interface=fsl.FILMGLS(),
name='NodeName_215cb480',
iterfield=['design_file', 'in_file', 'tcon_file'])
#Wraps command **fslmaths**
NodeHash_23b7ddc0 = pe.MapNode(interface=fsl.MeanImage(),
name='NodeName_23b7ddc0',
iterfield=['in_file'])
NodeHash_23b7ddc0.inputs.dimension = 'T'
#Makes a model specification compatible with spm/fsl designers.
NodeHash_1f14a780 = pe.MapNode(interface = modelgen.SpecifyModel(), name = 'NodeName_1f14a780', iterfield = ['functional_runs', 'subject_info'])
NodeHash_1f14a780.inputs.high_pass_filter_cutoff = 0
NodeHash_1f14a780.inputs.input_units = 'secs'
NodeHash_1f14a780.inputs.time_repetition = 2.0
#Generate FEAT specific files
NodeHash_1ee3fa40 = pe.MapNode(interface = fsl.Level1Design(), name = 'NodeName_1ee3fa40', iterfield = ['session_info'])
NodeHash_1ee3fa40.inputs.bases = {'dgamma':{'derivs': False}}
NodeHash_1ee3fa40.inputs.contrasts = [('con-incon', 'T', ['congruent_correct', 'congruent_correct'], [-1, 1])]
NodeHash_1ee3fa40.inputs.interscan_interval = 2.0
NodeHash_1ee3fa40.inputs.model_serial_correlations = True
#Wraps command **feat_model**
NodeHash_1ff83800 = pe.MapNode(interface = fsl.FEATModel(), name = 'NodeName_1ff83800', iterfield = ['ev_files', 'fsf_file'])
#Wraps command **film_gls**
NodeHash_215a5a10 = pe.MapNode(interface = fsl.FILMGLS(), name = 'NodeName_215a5a10', iterfield = ['design_file', 'in_file', 'tcon_file'])
#Wraps command **fslmaths**
NodeHash_218a6ba0 = pe.MapNode(interface = fsl.MeanImage(), name = 'NodeName_218a6ba0', iterfield = ['in_file'])
NodeHash_218a6ba0.inputs.dimension = 'T'
#Generic datasink module to store structured outputs
NodeHash_218b7a50 = pe.Node(interface = io.DataSink(), name = 'NodeName_218b7a50')
NodeHash_218b7a50.inputs.base_directory = '/tmp/FIRSTLEVEL'
#Basic interface class to select specific elements from a list
NodeHash_23ccf700 = pe.MapNode(interface = utility.Select(), name = 'NodeName_23ccf700', iterfield = ['inlist'])
NodeHash_23ccf700.inputs.index = 0
def first_level_wf(pipeline, subject_id, task_id, output_dir):
"""
First level workflow
"""
workflow = pe.Workflow(name='_'.join((pipeline, subject_id, task_id)))
inputnode = pe.Node(niu.IdentityInterface(fields=[
'bold_preproc', 'contrasts', 'confounds', 'brainmask', 'events_file'
]),
name='inputnode')
outputnode = pe.Node(
niu.IdentityInterface(fields=['sigma_pre', 'sigma_post', 'out_stats']),
name='outputnode')
conf2movpar = pe.Node(niu.Function(function=_confounds2movpar),
name='conf2movpar')
masker = pe.Node(fsl.ApplyMask(), name='masker')
bim = pe.Node(afni.BlurInMask(fwhm=5.0, outputtype='NIFTI_GZ'),
name='bim',
mem_gb=20)
ev = pe.Node(EventsFilesForTask(task=task_id), name='events')
l1 = pe.Node(SpecifyModel(
input_units='secs',
time_repetition=2,
high_pass_filter_cutoff=100,
parameter_source='FSL',
),
name='l1')
l1model = pe.Node(fsl.Level1Design(interscan_interval=2,
bases={'dgamma': {
'derivs': True
}},
model_serial_correlations=True),
name='l1design')
l1featmodel = pe.Node(fsl.FEATModel(), name='l1model')
l1estimate = pe.Node(fsl.FEAT(), name='l1estimate', mem_gb=40)
pre_smooth_afni = pe.Node(afni.FWHMx(combine=True,
detrend=True,
args='-ShowMeClassicFWHM'),
name='smooth_pre_afni',
mem_gb=20)
post_smooth_afni = pe.Node(afni.FWHMx(combine=True,
detrend=True,
args='-ShowMeClassicFWHM'),
name='smooth_post_afni',
mem_gb=20)
pre_smooth = pe.Node(fsl.SmoothEstimate(), name='smooth_pre', mem_gb=20)
post_smooth = pe.Node(fsl.SmoothEstimate(), name='smooth_post', mem_gb=20)
def _resels(val):
return val**(1 / 3.)
def _fwhm(fwhm):
from numpy import mean
return float(mean(fwhm, dtype=float))
workflow.connect([
(inputnode, masker, [('bold_preproc', 'in_file'),
('brainmask', 'mask_file')]),
(inputnode, ev, [('events_file', 'in_file')]),
(inputnode, l1model, [('contrasts', 'contrasts')]),
(inputnode, conf2movpar, [('confounds', 'in_confounds')]),
(inputnode, bim, [('brainmask', 'mask')]),
(masker, bim, [('out_file', 'in_file')]),
(bim, l1, [('out_file', 'functional_runs')]),
(ev, l1, [('event_files', 'event_files')]),
(conf2movpar, l1, [('out', 'realignment_parameters')]),
(l1, l1model, [('session_info', 'session_info')]),
(ev, l1model, [('orthogonalization', 'orthogonalization')]),
(l1model, l1featmodel, [('fsf_files', 'fsf_file'),
('ev_files', 'ev_files')]),
(l1model, l1estimate, [('fsf_files', 'fsf_file')]),
# Smooth
(inputnode, pre_smooth, [('bold_preproc', 'zstat_file'),
('brainmask', 'mask_file')]),
(bim, post_smooth, [('out_file', 'zstat_file')]),
(inputnode, post_smooth, [('brainmask', 'mask_file')]),
(pre_smooth, outputnode, [(('resels', _resels), 'sigma_pre')]),
(post_smooth, outputnode, [(('resels', _resels), 'sigma_post')]),
# Smooth with AFNI
(inputnode, pre_smooth_afni, [('bold_preproc', 'in_file'),
('brainmask', 'mask')]),
(bim, post_smooth_afni, [('out_file', 'in_file')]),
(inputnode, post_smooth_afni, [('brainmask', 'mask')]),
])
# Writing outputs
csv = pe.Node(AddCSVRow(in_file=str(output_dir / 'smoothness.csv')),
name='addcsv_%s_%s' % (subject_id, pipeline))
csv.inputs.sub_id = subject_id
csv.inputs.pipeline = pipeline
# Datasinks
ds_stats = pe.Node(niu.Function(function=_feat_stats), name='ds_stats')
ds_stats.inputs.subject_id = subject_id
ds_stats.inputs.task_id = task_id
ds_stats.inputs.variant = pipeline
ds_stats.inputs.out_path = output_dir
setattr(ds_stats.interface, '_always_run', True)
workflow.connect([
(outputnode, csv, [('sigma_pre', 'smooth_pre'),
('sigma_post', 'smooth_post')]),
(pre_smooth_afni, csv, [(('fwhm', _fwhm), 'fwhm_pre')]),
(post_smooth_afni, csv, [(('fwhm', _fwhm), 'fwhm_post')]),
(l1estimate, ds_stats, [('feat_dir', 'feat_dir')]),
(ds_stats, outputnode, [('out', 'out_stats')]),
])
return workflow
def init_taskbased_wf(analysis=None, memcalc=MemoryCalculator()):
"""
create workflow to calculate a first level glm for task functional data
"""
assert isinstance(analysis, Analysis)
assert isinstance(analysis.tags, Tags)
# make bold file variant specification
boldfilefields = ["bold_file"]
varianttupls = [("space", analysis.tags.space)]
if analysis.tags.grand_mean_scaled is not None:
assert isinstance(analysis.tags.grand_mean_scaled, GrandMeanScaledTag)
varianttupls.append(analysis.tags.grand_mean_scaled.as_tupl())
if analysis.tags.band_pass_filtered is not None:
assert isinstance(analysis.tags.band_pass_filtered,
BandPassFilteredTag)
assert analysis.tags.band_pass_filtered.type == "gaussian"
varianttupls.append(analysis.tags.band_pass_filtered.as_tupl())
if analysis.tags.confounds_removed is not None:
assert isinstance(analysis.tags.confounds_removed, ConfoundsRemovedTag)
confounds_removed_names = tuple(
name for name in analysis.tags.confounds_removed.names
if "aroma_motion" in name)
varianttupls.append(("confounds_removed", confounds_removed_names))
confounds_extract_names = tuple(
name for name in analysis.tags.confounds_removed.names
if "aroma_motion" not in name)
if len(confounds_extract_names) > 0:
boldfilefields.append("confounds_file")
varianttupls.append(("confounds_extract", confounds_extract_names))
if analysis.tags.smoothed is not None:
assert isinstance(analysis.tags.smoothed, SmoothedTag)
varianttupls.append(analysis.tags.smoothed.as_tupl())
variantdict = dict(varianttupls)
boldfilevariant = (tuple(boldfilefields), tuple(varianttupls))
assert analysis.name is not None
workflow = pe.Workflow(name=analysis.name)
# inputs are the bold file, the mask file and the confounds file
inputnode = pe.Node(
niu.IdentityInterface(fields=[
*boldfilefields, "mask_file", "condition_files", "metadata"
]),
name="inputnode",
)
# parse condition files into three (ordered) lists
parseconditionfile = pe.Node(
interface=ParseConditionFile(),
name="parseconditionfile",
)
workflow.connect(inputnode, "condition_files", parseconditionfile,
"in_any")
def get_repetition_time(dic):
return dic.get("RepetitionTime")
# first level model specification
modelspec = pe.Node(
interface=model.SpecifyModel(input_units="secs", ),
name="modelspec",
)
workflow.connect([
(
inputnode,
modelspec,
[
("bold_file", "functional_runs"),
(("metadata", get_repetition_time), "time_repetition"),
],
),
(parseconditionfile, modelspec, [("subject_info", "subject_info")]),
])
if "band_pass_filtered" in variantdict:
modelspec.inputs.high_pass_filter_cutoff = float(
analysis.tags.band_pass_filtered.high)
if "confounds_extract" in variantdict:
workflow.connect([(inputnode, modelspec,
[("confounds_file", "realignment_parameters")])])
# transform contrasts dictionary to nipype list data structure
contrasts = [[
contrast.name,
contrast.type.upper(), *map(list, zip(*contrast.values.items()))
] for contrast in analysis.contrasts]
# generate design from first level specification
level1design = pe.Node(
interface=fsl.Level1Design(
contrasts=contrasts,
model_serial_correlations=True,
bases={"dgamma": {
"derivs": False
}},
),
name="level1design",
)
workflow.connect([
(
inputnode,
level1design,
[(("metadata", get_repetition_time), "interscan_interval")],
),
(modelspec, level1design, [("session_info", "session_info")]),
])
# generate required input files for FILMGLS from design
modelgen = pe.Node(interface=fsl.FEATModel(),
name="modelgen",
iterfield=["fsf_file", "ev_files"])
workflow.connect([(
level1design,
modelgen,
[("fsf_files", "fsf_file"), ("ev_files", "ev_files")],
)])
# calculate range of image values to determine cutoff value
# for FILMGLS
boldfilecutoff = pe.Node(interface=fsl.ImageStats(op_string="-R"),
name="boldfilecutoff")
workflow.connect([(inputnode, boldfilecutoff, [("bold_file", "in_file")])])
# actually estimate the first level model
modelestimate = pe.Node(
interface=fsl.FILMGLS(smooth_autocorr=True, mask_size=5),
name="modelestimate",
iterfield=["design_file", "in_file", "tcon_file"],
)
workflow.connect([
(inputnode, modelestimate, [("bold_file", "in_file")]),
(boldfilecutoff, modelestimate, [(("out_stat", firstfloat),
"threshold")]),
(
modelgen,
modelestimate,
[("design_file", "design_file"), ("con_file", "tcon_file")],
),
])
# make dof volume
makedofvolume = pe.MapNode(
interface=MakeDofVolume(),
iterfield=["dof_file", "cope_file"],
name="makedofvolume",
)
workflow.connect([
(
modelestimate,
makedofvolume,
[(("copes", first), "cope_file"), ("dof_file", "dof_file")],
),
])
outputnode = pe.Node(
interface=MakeResultdicts(keys=[
"firstlevelanalysisname",
"firstlevelfeaturename",
"cope",
"varcope",
"zstat",
"dof_file",
"mask_file",
]),
name="outputnode",
)
outputnode.inputs.firstlevelanalysisname = analysis.name
outputnode.inputs.firstlevelfeaturename = list(map(first, contrasts))
workflow.connect([
(inputnode, outputnode, [("metadata", "basedict"),
("mask_file", "mask_file")]),
(
modelestimate,
outputnode,
[
(("copes", ravel), "cope"),
(("varcopes", ravel), "varcope"),
(("zstats", ravel), "zstat"),
],
),
(makedofvolume, outputnode, [("out_file", "dof_file")]),
])
return workflow, (boldfilevariant, )
def fsl_run_level_wf(
model,
step,
bids_dir,
output_dir,
work_dir,
subject_id,
database_path,
smoothing_fwhm=None,
smoothing_level=None,
smoothing_type=None,
use_rapidart=False,
detrend_poly=None,
align_volumes=None,
smooth_autocorrelations=False,
despike=False,
name="fsl_run_level_wf",
):
"""Generate run level workflow for a given model."""
bids_dir = Path(bids_dir)
work_dir = Path(work_dir)
workflow = pe.Workflow(name=name)
level = step["Level"]
dimensionality = 3 # Nipype FSL.SUSAN Default
if smoothing_type == "inp":
dimensionality = 2
workflow.__desc__ = ""
(work_dir / model["Name"]).mkdir(exist_ok=True)
include_entities = {}
if "Input" in model:
if "Include" in model["Input"]:
include_entities = model["Input"]["Include"]
include_entities.update({"subject": subject_id})
getter = pe.Node(
BIDSGet(
database_path=database_path,
fixed_entities=include_entities,
align_volumes=align_volumes,
),
name="func_select",
)
get_info = pe.MapNode(
GetRunModelInfo(model=step, detrend_poly=detrend_poly),
iterfield=[
"metadata_file", "regressor_file", "events_file", "entities"
],
name=f"get_{level}_info",
)
despiker = pe.MapNode(
afni.Despike(outputtype="NIFTI_GZ"),
iterfield=["in_file"],
name="despiker",
)
realign_runs = pe.MapNode(
fsl.MCFLIRT(output_type="NIFTI_GZ", interpolation="sinc"),
iterfield=["in_file", "ref_file"],
name="func_realign",
)
wrangle_volumes = pe.MapNode(
IdentityInterface(fields=["functional_file"]),
iterfield=["functional_file"],
name="wrangle_volumes",
)
specify_model = pe.MapNode(
modelgen.SpecifyModel(high_pass_filter_cutoff=-1.0,
input_units="secs"),
iterfield=["functional_runs", "subject_info", "time_repetition"],
name=f"model_{level}_specify",
)
fit_model = pe.MapNode(
IdentityInterface(
fields=[
"session_info", "interscan_interval", "contrasts",
"functional_data"
],
mandatory_inputs=True,
),
iterfield=[
"functional_data", "session_info", "interscan_interval",
"contrasts"
],
name=f"model_{level}_fit",
)
first_level_design = pe.MapNode(
fsl.Level1Design(
bases={"dgamma": {
"derivs": False
}},
model_serial_correlations=False,
),
iterfield=["session_info", "interscan_interval", "contrasts"],
name=f"model_{level}_design",
)
generate_model = pe.MapNode(
fsl.FEATModel(output_type="NIFTI_GZ"),
iterfield=["fsf_file", "ev_files"],
name=f"model_{level}_generate",
)
estimate_model = pe.MapNode(
fsl.FILMGLS(
threshold=0.0, # smooth_autocorr=True
output_type="NIFTI_GZ",
results_dir="results",
smooth_autocorr=False,
autocorr_noestimate=True,
),
iterfield=["design_file", "in_file", "tcon_file"],
name=f"model_{level}_estimate",
)
if smooth_autocorrelations:
first_level_design.inputs.model_serial_correlations = True
estimate_model.inputs.smooth_autocorr = True
estimate_model.inputs.autocorr_noestimate = False
calculate_p = pe.MapNode(
fsl.ImageMaths(output_type="NIFTI_GZ",
op_string="-ztop",
suffix="_pval"),
iterfield=["in_file"],
name=f"model_{level}_caculate_p",
)
image_pattern = ("[sub-{subject}/][ses-{session}/]"
"[sub-{subject}_][ses-{session}_]"
"task-{task}_[acq-{acquisition}_]"
"[rec-{reconstruction}_][run-{run}_]"
"[echo-{echo}_][space-{space}_]contrast-{contrast}_"
"stat-{stat<effect|variance|z|p|t|F>}_statmap.nii.gz")
run_rapidart = pe.MapNode(
ra.ArtifactDetect(
use_differences=[True, False],
use_norm=True,
zintensity_threshold=3,
norm_threshold=1,
bound_by_brainmask=True,
mask_type="file",
parameter_source="FSL",
),
iterfield=["realignment_parameters", "realigned_files", "mask_file"],
name="rapidart_run",
)
reshape_rapidart = pe.MapNode(
Function(
input_names=[
"run_info", "functional_file", "outlier_file",
"contrast_entities"
],
output_names=["run_info", "contrast_entities"],
function=utils.reshape_ra,
),
iterfield=[
"run_info", "functional_file", "outlier_file", "contrast_entities"
],
name="reshape_rapidart",
)
mean_img = pe.MapNode(
fsl.ImageMaths(output_type="NIFTI_GZ",
op_string="-Tmean",
suffix="_mean"),
iterfield=["in_file", "mask_file"],
name="smooth_susan_avgimg",
)
median_img = pe.MapNode(
fsl.ImageStats(output_type="NIFTI_GZ", op_string="-k %s -p 50"),
iterfield=["in_file", "mask_file"],
name="smooth_susan_medimg",
)
merge = pe.Node(Merge(2, axis="hstack"), name="smooth_merge")
run_susan = pe.MapNode(
fsl.SUSAN(output_type="NIFTI_GZ"),
iterfield=["in_file", "brightness_threshold", "usans"],
name="smooth_susan",
)
mask_functional = pe.MapNode(ApplyMask(),
iterfield=["in_file", "mask_file"],
name="mask_functional")
# Exists solely to correct undesirable behavior of FSL
# that results in loss of constant columns
correct_matrices = pe.MapNode(
Function(
input_names=["design_matrix"],
output_names=["design_matrix"],
function=utils.correct_matrix,
),
iterfield=["design_matrix"],
run_without_submitting=True,
name=f"correct_{level}_matrices",
)
collate = pe.Node(
MergeAll(
fields=[
"effect_maps",
"variance_maps",
"zscore_maps",
"pvalue_maps",
"tstat_maps",
"contrast_metadata",
],
check_lengths=True,
),
name=f"collate_{level}",
)
collate_outputs = pe.Node(
CollateWithMetadata(
fields=[
"effect_maps", "variance_maps", "zscore_maps", "pvalue_maps",
"tstat_maps"
],
field_to_metadata_map={
"effect_maps": {
"stat": "effect"
},
"variance_maps": {
"stat": "variance"
},
"zscore_maps": {
"stat": "z"
},
"pvalue_maps": {
"stat": "p"
},
"tstat_maps": {
"stat": "t"
},
},
),
name=f"collate_{level}_outputs",
)
plot_matrices = pe.MapNode(
PlotMatrices(output_dir=output_dir, database_path=database_path),
iterfield=["mat_file", "con_file", "entities", "run_info"],
run_without_submitting=True,
name=f"plot_{level}_matrices",
)
ds_contrast_maps = pe.MapNode(
BIDSDataSink(base_directory=output_dir, path_patterns=image_pattern),
iterfield=["entities", "in_file"],
run_without_submitting=True,
name=f"ds_{level}_contrast_maps",
)
wrangle_outputs = pe.Node(
IdentityInterface(fields=["contrast_metadata", "contrast_maps"]),
name=f"wrangle_{level}_outputs",
)
# Setup connections among nodes
workflow.connect([(
getter,
get_info,
[
("metadata_files", "metadata_file"),
("events_files", "events_file"),
("regressor_files", "regressor_file"),
("entities", "entities"),
],
)])
if align_volumes and despike:
workflow.connect([
(getter, despiker, [("functional_files", "in_file")]),
(despiker, realign_runs, [("out_file", "in_file")]),
(getter, realign_runs, [("reference_files", "ref_file")]),
(
realign_runs,
wrangle_volumes,
[("out_file", "functional_file")],
),
])
elif align_volumes and not despike:
workflow.connect([
(
getter,
realign_runs,
[("functional_files", "in_file"),
("reference_files", "ref_file")],
),
(
realign_runs,
wrangle_volumes,
[("out_file", "functional_file")],
),
])
elif despike:
workflow.connect([
(getter, despiker, [("functional_files", "in_file")]),
(despiker, wrangle_volumes, [("out_file", "functional_file")]),
])
else:
workflow.connect([(getter, wrangle_volumes, [("functional_files",
"functional_file")])])
if use_rapidart:
workflow.connect([
(get_info, run_rapidart, [("motion_parameters",
"realignment_parameters")]),
(getter, run_rapidart, [("mask_files", "mask_file")]),
(
wrangle_volumes,
run_rapidart,
[("functional_file", "realigned_files")],
),
(
run_rapidart,
reshape_rapidart,
[("outlier_files", "outlier_file")],
),
(
get_info,
reshape_rapidart,
[("run_info", "run_info"),
("contrast_entities", "contrast_entities")],
),
(wrangle_volumes, reshape_rapidart, [("functional_file",
"functional_file")]),
(
reshape_rapidart,
specify_model,
[("run_info", "subject_info")],
),
(reshape_rapidart, plot_matrices, [("run_info", "run_info")]),
(reshape_rapidart, collate, [("contrast_entities",
"contrast_metadata")]),
])
else:
workflow.connect([
(get_info, specify_model, [("run_info", "subject_info")]),
(get_info, plot_matrices, [("run_info", "run_info")]),
(
get_info,
collate,
[("contrast_entities", "contrast_metadata")],
),
])
if smoothing_level == "l1" or smoothing_level == "run":
run_susan.inputs.fwhm = smoothing_fwhm
run_susan.inputs.dimension = dimensionality
estimate_model.inputs.mask_size = smoothing_fwhm
workflow.connect([
(wrangle_volumes, mean_img, [("functional_file", "in_file")]),
(
wrangle_volumes,
median_img,
[("functional_file", "in_file")],
),
(getter, mean_img, [("mask_files", "mask_file")]),
(getter, median_img, [("mask_files", "mask_file")]),
(mean_img, merge, [("out_file", "in1")]),
(median_img, merge, [("out_stat", "in2")]),
(wrangle_volumes, run_susan, [("functional_file", "in_file")]),
(
median_img,
run_susan,
[(
("out_stat", utils.get_btthresh),
"brightness_threshold",
)],
),
(merge, run_susan, [(("out", utils.get_usans), "usans")]),
(getter, mask_functional, [("mask_files", "mask_file")]),
(run_susan, mask_functional, [("smoothed_file", "in_file")]),
(
mask_functional,
specify_model,
[("out_file", "functional_runs")],
),
(
mask_functional,
fit_model,
[("out_file", "functional_data")],
),
])
else:
workflow.connect([
(getter, mask_functional, [("mask_files", "mask_file")]),
(
wrangle_volumes,
mask_functional,
[("functional_file", "in_file")],
),
(
mask_functional,
specify_model,
[("out_file", "functional_runs")],
),
(
mask_functional,
fit_model,
[("out_file", "functional_data")],
),
])
workflow.connect([
(
get_info,
specify_model,
[("repetition_time", "time_repetition")],
),
(specify_model, fit_model, [("session_info", "session_info")]),
(
get_info,
fit_model,
[("repetition_time", "interscan_interval"),
("run_contrasts", "contrasts")],
),
(
fit_model,
first_level_design,
[
("interscan_interval", "interscan_interval"),
("session_info", "session_info"),
("contrasts", "contrasts"),
],
),
(first_level_design, generate_model, [("fsf_files", "fsf_file")]),
(first_level_design, generate_model, [("ev_files", "ev_files")]),
])
if detrend_poly:
workflow.connect([
(
generate_model,
correct_matrices,
[("design_file", "design_matrix")],
),
(
correct_matrices,
plot_matrices,
[("design_matrix", "mat_file")],
),
(
correct_matrices,
estimate_model,
[("design_matrix", "design_file")],
),
])
else:
workflow.connect([
(generate_model, plot_matrices, [("design_file", "mat_file")]),
(
generate_model,
estimate_model,
[("design_file", "design_file")],
),
])
workflow.connect([
(getter, plot_matrices, [("entities", "entities")]),
(generate_model, plot_matrices, [("con_file", "con_file")]),
(fit_model, estimate_model, [("functional_data", "in_file")]),
(generate_model, estimate_model, [("con_file", "tcon_file")]),
(
estimate_model,
calculate_p,
[(("zstats", utils.flatten), "in_file")],
),
(
estimate_model,
collate,
[
("copes", "effect_maps"),
("varcopes", "variance_maps"),
("zstats", "zscore_maps"),
("tstats", "tstat_maps"),
],
),
(calculate_p, collate, [("out_file", "pvalue_maps")]),
(
collate,
collate_outputs,
[
("effect_maps", "effect_maps"),
("variance_maps", "variance_maps"),
("zscore_maps", "zscore_maps"),
("pvalue_maps", "pvalue_maps"),
("tstat_maps", "tstat_maps"),
("contrast_metadata", "metadata"),
],
),
(
collate_outputs,
ds_contrast_maps,
[("out", "in_file"), ("metadata", "entities")],
),
(
collate_outputs,
wrangle_outputs,
[("metadata", "contrast_metadata"), ("out", "contrast_maps")],
),
])
return workflow
input_units='secs',
high_pass_filter_cutoff=120,
time_repetition = tr,
), name='l1_spec')
# l1_model creates a first-level model design
l1_model = pe.Node(fsl.Level1Design(
bases={'dgamma': {'derivs': True}},
model_serial_correlations=True,
interscan_interval = tr,
contrasts=contrasts
# orthogonalization=orthogonality,
), name='l1_model')
# feat_spec generates an fsf model specification file
feat_spec = pe.Node(fsl.FEATModel(), name='feat_spec')
# feat_fit actually runs FEAT
feat_fit = pe.Node(fsl.FEAT(), name='feat_fit', mem_gb=5)
## instead of FEAT
#modelestimate = pe.MapNode(interface=fsl.FILMGLS(smooth_autocorr=True,
# mask_size=5,
# threshold=1000),
# name='modelestimate',
# iterfield = ['design_file',
# 'in_file',
# 'tcon_file'])
feat_select = pe.Node(nio.SelectFiles({
'cope': 'stats/cope*.nii.gz',
'pe': 'stats/pe[0-9][0-9].nii.gz',
def model_fitting(source_img, prepped_img, subject_info, aroma, task, args,
mask_file, run_number):
# Get the necessary parameters
outputdir = args.outputdir
fwhm = args.fwhm
cthresh = args.cthresh
alpha = args.alpha
# Make a task directory in the output folder
if run_number > 0:
taskdir = os.path.join(outputdir,
task + "_run-0" + str(run_number + 1))
else:
taskdir = os.path.join(outputdir, task)
if not os.path.exists(taskdir):
os.mkdir(taskdir)
os.mkdir(os.path.join(taskdir, 'stats'))
os.mkdir(os.path.join(taskdir, 'figs'))
processed_image = preprocess(aroma, fwhm, prepped_img, mask_file, taskdir,
task)
task_vs_baseline = [
task + " vs baseline", 'T', [task, 'baseline'], [1, -1]
] # set up contrasts
contrasts = [task_vs_baseline]
"""
Model fitting workflow
Inputs::
inputspec.session_info : info generated by modelgen.SpecifyModel
inputspec.interscan_interval : interscan interval
inputspec.contrasts : list of contrasts
inputspec.film_threshold : image threshold for FILM estimation
inputspec.model_serial_correlations
inputspec.bases
Outputs::
outputspec.copes
outputspec.varcopes
outputspec.dof_file
outputspec.zfiles
outputspec.parameter_estimates
"""
modelfit = pe.Workflow(name='modelfit', base_dir=taskdir)
modelspec = pe.Node(interface=model.SpecifyModel(),
name="modelspec") # generate design info
inputspec = pe.Node(util.IdentityInterface(fields=[
'session_info', 'interscan_interval', 'contrasts', 'film_threshold',
'functional_data', 'bases', 'model_serial_correlations'
]),
name='inputspec')
level1design = pe.Node(interface=fsl.Level1Design(), name="level1design")
modelgen = pe.MapNode(interface=fsl.FEATModel(),
name='modelgen',
iterfield=['fsf_file', 'ev_files'])
modelestimate = pe.MapNode(
interface=fsl.FILMGLS(smooth_autocorr=True, mask_size=5),
name='modelestimate',
iterfield=['design_file', 'in_file', 'tcon_file'])
merge_contrasts = pe.MapNode(interface=util.Merge(2),
name='merge_contrasts',
iterfield=['in1'])
outputspec = pe.Node(util.IdentityInterface(fields=[
'copes', 'varcopes', 'dof_file', 'zfiles', 'parameter_estimates'
]),
name='outputspec')
modelfit.connect([
(modelspec, inputspec, [('session_info', 'session_info')]),
(inputspec, level1design,
[('interscan_interval', 'interscan_interval'),
('session_info', 'session_info'), ('contrasts', 'contrasts'),
('bases', 'bases'),
('model_serial_correlations', 'model_serial_correlations')]),
(inputspec, modelestimate, [('film_threshold', 'threshold'),
('functional_data', 'in_file')]),
(level1design, modelgen, [('fsf_files', 'fsf_file'),
('ev_files', 'ev_files')]),
(modelgen, modelestimate, [('design_file', 'design_file')]),
(merge_contrasts, outputspec, [('out', 'zfiles')]),
(modelestimate, outputspec, [('param_estimates',
'parameter_estimates'),
('dof_file', 'dof_file')]),
])
modelfit.connect([
(modelgen, modelestimate, [('con_file', 'tcon_file'),
('fcon_file', 'fcon_file')]),
(modelestimate, merge_contrasts, [('zstats', 'in1'),
('zfstats', 'in2')]),
(modelestimate, outputspec, [('copes', 'copes'),
('varcopes', 'varcopes')]),
])
# Define inputs to workflow
modelspec.inputs.functional_runs = processed_image
inputspec.inputs.functional_data = processed_image
modelspec.inputs.subject_info = subject_info
modelspec.inputs.input_units = 'secs'
modelspec.inputs.time_repetition = source_img.entities['RepetitionTime']
modelspec.inputs.high_pass_filter_cutoff = 90
inputspec.inputs.model_serial_correlations = True
inputspec.inputs.film_threshold = 10.0
inputspec.inputs.interscan_interval = source_img.entities['RepetitionTime']
inputspec.inputs.bases = {
'gamma': {
'gammasigma': 3,
'gammadelay': 6,
'derivs': True
}
}
inputspec.inputs.contrasts = contrasts
# Run the model-fitting pipeline. Main outputs are a feat directory (w/ functional img) and a design.mat file
res = modelfit.run()
# outputs
output_txt = open(os.path.join(taskdir, task + '_outputs.txt'), 'w')
print_outputs(output_txt, res)
# The third node, FILM's, first element (i.e. only element) of its 'zstats' output
z_img = list(res.nodes)[2].result.outputs.zstats[0]
# Use False Discovery Rate theory to correct for multiple comparisons
fdr_thresh_img, fdr_threshold = thresholding.map_threshold(
stat_img=z_img,
mask_img=mask_file,
alpha=alpha,
height_control='fdr',
cluster_threshold=cthresh)
print("Thresholding at FDR corrected threshold of " + str(fdr_threshold))
fdr_thresh_img_path = os.path.join(taskdir,
task + '_fdr_thresholded_z.nii.gz')
nibabel.save(fdr_thresh_img, fdr_thresh_img_path)
# Do a cluster analysis using the FDR corrected threshold on the original z_img
print("Performing cluster analysis.")
cl = fsl.Cluster(in_file=z_img, threshold=fdr_threshold)
cluster_file = os.path.join(taskdir, 'stats', task + "_cluster_stats.txt")
cluster_analysis(cluster_file, cl)
# Resample the result image with AFNI
resample_fdr_thresh_img_path = os.path.join(
taskdir, task + '_fdr_thresholded_z_resample.nii.gz')
print("Resampling thresholded image to MNI space")
resample = afni.Resample(master=template,
out_file=resample_fdr_thresh_img_path,
in_file=fdr_thresh_img_path)
resample.run()
os.remove(fdr_thresh_img_path)
print("Image to be returned: " + resample_fdr_thresh_img_path)
return resample_fdr_thresh_img_path
def create_first(name='modelfit'):
"""First level task-fMRI modelling workflow
Parameters
----------
name : name of workflow. Default = 'modelfit'
Inputs
------
inputspec.session_info :
inputspec.interscan_interval :
inputspec.contrasts :
inputspec.film_threshold :
inputspec.functional_data :
inputspec.bases :
inputspec.model_serial_correlations :
Outputs
-------
outputspec.copes :
outputspec.varcopes :
outputspec.dof_file :
outputspec.pfiles :
outputspec.parameter_estimates :
outputspec.zstats :
outputspec.tstats :
outputspec.design_image :
outputspec.design_file :
outputspec.design_cov :
Returns
-------
workflow : first-level workflow
"""
import nipype.interfaces.fsl as fsl # fsl
import nipype.pipeline.engine as pe
import nipype.interfaces.utility as util
modelfit = pe.Workflow(name=name)
inputspec = pe.Node(util.IdentityInterface(fields=[
'session_info', 'interscan_interval', 'contrasts', 'film_threshold',
'functional_data', 'bases', 'model_serial_correlations'
]),
name='inputspec')
level1design = pe.Node(interface=fsl.Level1Design(),
name="create_level1_design")
modelgen = pe.MapNode(interface=fsl.FEATModel(),
name='generate_model',
iterfield=['fsf_file', 'ev_files'])
modelestimate = pe.MapNode(interface=fsl.FILMGLS(smooth_autocorr=True,
mask_size=5),
name='estimate_model',
iterfield=['design_file', 'in_file'])
conestimate = pe.MapNode(interface=fsl.ContrastMgr(),
name='estimate_contrast',
iterfield=[
'tcon_file', 'param_estimates',
'sigmasquareds', 'corrections', 'dof_file'
])
ztopval = pe.MapNode(interface=fsl.ImageMaths(op_string='-ztop',
suffix='_pval'),
name='z2pval',
iterfield=['in_file'])
outputspec = pe.Node(util.IdentityInterface(fields=[
'copes', 'varcopes', 'dof_file', 'pfiles', 'parameter_estimates',
'zstats', 'tstats', 'design_image', 'design_file', 'design_cov',
'sigmasquareds'
]),
name='outputspec')
# Utility function
pop_lambda = lambda x: x[0]
# Setup the connections
modelfit.connect([
(inputspec, level1design,
[('interscan_interval', 'interscan_interval'),
('session_info', 'session_info'), ('contrasts', 'contrasts'),
('bases', 'bases'),
('model_serial_correlations', 'model_serial_correlations')]),
(inputspec, modelestimate, [('film_threshold', 'threshold'),
('functional_data', 'in_file')]),
(level1design, modelgen, [('fsf_files', 'fsf_file'),
('ev_files', 'ev_files')]),
(modelgen, modelestimate, [('design_file', 'design_file')]),
(modelgen, conestimate, [('con_file', 'tcon_file')]),
(modelestimate, conestimate, [('param_estimates', 'param_estimates'),
('sigmasquareds', 'sigmasquareds'),
('corrections', 'corrections'),
('dof_file', 'dof_file')]),
(conestimate, ztopval, [(('zstats', pop_lambda), 'in_file')]),
(ztopval, outputspec, [('out_file', 'pfiles')]),
(modelestimate, outputspec, [('param_estimates',
'parameter_estimates'),
('dof_file', 'dof_file'),
('sigmasquareds', 'sigmasquareds')]),
(conestimate, outputspec, [('copes', 'copes'),
('varcopes', 'varcopes'),
('tstats', 'tstats'), ('zstats', 'zstats')])
])
modelfit.connect(modelgen, 'design_image', outputspec, 'design_image')
modelfit.connect(modelgen, 'design_file', outputspec, 'design_file')
modelfit.connect(modelgen, 'design_cov', outputspec, 'design_cov')
return modelfit
NodeHash_6bef320.inputs.high_pass_filter_cutoff = 0
NodeHash_6bef320.inputs.input_units = 'secs'
NodeHash_6bef320.inputs.time_repetition = 2.0
#Generate FEAT specific files
NodeHash_8241250 = pe.Node(interface=fsl.Level1Design(),
name='NodeName_8241250')
NodeHash_8241250.inputs.bases = {'dgamma': {'derivs': False}}
NodeHash_8241250.inputs.contrasts = [
('con-incon', 'T', ['congruent_correct', 'congruent_correct'], [-1, 1])
]
NodeHash_8241250.inputs.interscan_interval = 2.0
NodeHash_8241250.inputs.model_serial_correlations = True
#Wraps command **feat_model**
NodeHash_8b12580 = pe.Node(interface=fsl.FEATModel(), name='NodeName_8b12580')
#Wraps command **film_gls**
NodeHash_5015c80 = pe.Node(interface=fsl.FILMGLS(), name='NodeName_5015c80')
#Generic datasink module to store structured outputs
NodeHash_8a104d0 = pe.Node(interface=io.DataSink(), name='NodeName_8a104d0')
NodeHash_8a104d0.inputs.base_directory = '/tmp/FIRSTLEVEL'
#Create a workflow to connect all those nodes
analysisflow = nipype.Workflow('MyWorkflow')
analysisflow.connect(NodeHash_3042f20, 'subject_info', NodeHash_6bef320,
'subject_info')
analysisflow.connect(NodeHash_32c4e30, 'events', NodeHash_3042f20, 'in_file')
analysisflow.connect(NodeHash_6bef320, 'session_info', NodeHash_8241250,
'session_info')
def first_level_wf(in_files, output_dir, fwhm=6.0, name='wf_1st_level'):
workflow = pe.Workflow(name=name)
datasource = pe.Node(niu.Function(function=_dict_ds,
output_names=DATA_ITEMS),
name='datasource')
datasource.inputs.in_dict = in_files
datasource.iterables = ('sub', sorted(in_files.keys()))
# Extract motion parameters from regressors file
runinfo = pe.Node(niu.Function(input_names=[
'in_file', 'events_file', 'regressors_file', 'regressors_names'
],
function=_bids2nipypeinfo,
output_names=['info', 'realign_file']),
name='runinfo')
# Set the column names to be used from the confounds file
runinfo.inputs.regressors_names = ['dvars', 'framewise_displacement'] + \
['a_comp_cor_%02d' % i for i in range(6)] + ['cosine%02d' % i for i in range(4)]
# SUSAN smoothing
susan = create_susan_smooth()
susan.inputs.inputnode.fwhm = fwhm
l1_spec = pe.Node(SpecifyModel(parameter_source='FSL',
input_units='secs',
high_pass_filter_cutoff=100),
name='l1_spec')
# l1_model creates a first-level model design
l1_model = pe.Node(
fsl.Level1Design(
bases={'dgamma': {
'derivs': True
}},
model_serial_correlations=True,
#ENTER YOUR OWN CONTRAST HERE
contrasts=[],
# orthogonalization=orthogonality,
),
name='l1_model')
# feat_spec generates an fsf model specification file
feat_spec = pe.Node(fsl.FEATModel(), name='feat_spec')
# feat_fit actually runs FEAT
feat_fit = pe.Node(fsl.FEAT(), name='feat_fit', mem_gb=12)
feat_select = pe.Node(nio.SelectFiles({
'cope': 'stats/cope1.nii.gz',
'pe': 'stats/pe[0-9][0-9].nii.gz',
'tstat': 'stats/tstat1.nii.gz',
'varcope': 'stats/varcope1.nii.gz',
'zstat': 'stats/zstat1.nii.gz',
}),
name='feat_select')
ds_cope = pe.Node(DerivativesDataSink(base_directory=str(output_dir),
keep_dtype=False,
suffix='cope',
desc='intask'),
name='ds_cope',
run_without_submitting=True)
ds_varcope = pe.Node(DerivativesDataSink(base_directory=str(output_dir),
keep_dtype=False,
suffix='varcope',
desc='intask'),
name='ds_varcope',
run_without_submitting=True)
ds_zstat = pe.Node(DerivativesDataSink(base_directory=str(output_dir),
keep_dtype=False,
suffix='zstat',
desc='intask'),
name='ds_zstat',
run_without_submitting=True)
ds_tstat = pe.Node(DerivativesDataSink(base_directory=str(output_dir),
keep_dtype=False,
suffix='tstat',
desc='intask'),
name='ds_tstat',
run_without_submitting=True)
workflow.connect([
(datasource, susan, [('bold', 'inputnode.in_files'),
('mask', 'inputnode.mask_file')]),
(datasource, runinfo, [('events', 'events_file'),
('regressors', 'regressors_file')]),
(susan, l1_spec, [('outputnode.smoothed_files', 'functional_runs')]),
(datasource, l1_spec, [('tr', 'time_repetition')]),
(datasource, l1_model, [('tr', 'interscan_interval')]),
(datasource, ds_cope, [('bold', 'source_file')]),
(datasource, ds_varcope, [('bold', 'source_file')]),
(datasource, ds_zstat, [('bold', 'source_file')]),
(datasource, ds_tstat, [('bold', 'source_file')]),
(susan, runinfo, [('outputnode.smoothed_files', 'in_file')]),
(runinfo, l1_spec, [('info', 'subject_info'),
('realign_file', 'realignment_parameters')]),
(l1_spec, l1_model, [('session_info', 'session_info')]),
(l1_model, feat_spec, [('fsf_files', 'fsf_file'),
('ev_files', 'ev_files')]),
(l1_model, feat_fit, [('fsf_files', 'fsf_file')]),
(feat_fit, feat_select, [('feat_dir', 'base_directory')]),
(feat_select, ds_cope, [('cope', 'in_file')]),
(feat_select, ds_varcope, [('varcope', 'in_file')]),
(feat_select, ds_zstat, [('zstat', 'in_file')]),
(feat_select, ds_tstat, [('tstat', 'in_file')]),
])
return workflow
def create_modelfit_workflow(name='modelfit'):
"""Create an FSL individual modelfitting workflow
Example
-------
>>> modelfit = create_modelfit_workflow()
>>> modelfit.base_dir = '.'
>>> info = dict()
>>> modelfit.inputs.inputspec.session_info = info
>>> modelfit.inputs.inputspec.interscan_interval = 3.
>>> modelfit.inputs.inputspec.film_threshold = 1000
>>> modelfit.run() #doctest: +SKIP
Inputs::
inputspec.session_info : info generated by modelgen.SpecifyModel
inputspec.interscan_interval : interscan interval
inputspec.contrasts : list of contrasts
inputspec.film_threshold : image threshold for FILM estimation
Outputs::
outputspec.realignment_parameters : realignment parameter files
outputspec.smoothed_files : smoothed functional files
outputspec.outlier_files : list of outliers
outputspec.outlier_stats : statistics of outliers
outputspec.outlier_plots : images of outliers
outputspec.mask_file : binary mask file in reference image space
outputspec.reg_file : registration file that maps reference image to
freesurfer space
outputspec.reg_cost : cost of registration (useful for detecting
misalignment)
"""
modelfit = pe.Workflow(name=name)
"""
Create the nodes
"""
inputspec = pe.Node(util.IdentityInterface(fields=['session_info',
'interscan_interval',
'contrasts',
'film_threshold',
'functional_data',
'bases',
'model_serial_correlations']),
name='inputspec')
level1design = pe.Node(interface=fsl.Level1Design(), name="level1design")
modelgen = pe.MapNode(interface=fsl.FEATModel(), name='modelgen',
iterfield=['fsf_file', 'ev_files'])
modelestimate = pe.MapNode(interface=fsl.FILMGLS(smooth_autocorr=True,
mask_size=5),
name='modelestimate',
iterfield=['design_file', 'in_file'])
conestimate = pe.MapNode(interface=fsl.ContrastMgr(), name='conestimate',
iterfield=['tcon_file', 'param_estimates',
'sigmasquareds', 'corrections',
'dof_file'])
ztopval = pe.MapNode(interface=fsl.ImageMaths(op_string='-ztop',
suffix='_pval'),
name='ztop',
iterfield=['in_file'])
outputspec = pe.Node(util.IdentityInterface(fields=['copes', 'varcopes',
'dof_file', 'pfiles',
'parameter_estimates']),
name='outputspec')
"""
Utility function
"""
pop_lambda = lambda x: x[0]
"""
Setup the connections
"""
modelfit.connect([
(inputspec, level1design, [('interscan_interval', 'interscan_interval'),
('session_info', 'session_info'),
('contrasts', 'contrasts'),
('bases', 'bases'),
('model_serial_correlations',
'model_serial_correlations')]),
(inputspec, modelestimate, [('film_threshold', 'threshold'),
('functional_data', 'in_file')]),
(level1design, modelgen, [('fsf_files', 'fsf_file'),
('ev_files', 'ev_files')]),
(modelgen, modelestimate, [('design_file', 'design_file')]),
(modelgen, conestimate, [('con_file', 'tcon_file')]),
(modelestimate, conestimate, [('param_estimates', 'param_estimates'),
('sigmasquareds', 'sigmasquareds'),
('corrections', 'corrections'),
('dof_file', 'dof_file')]),
(conestimate, ztopval, [(('zstats', pop_lambda), 'in_file')]),
(ztopval, outputspec, [('out_file', 'pfiles')]),
(modelestimate, outputspec, [('param_estimates', 'parameter_estimates'),
('dof_file', 'dof_file')]),
(conestimate, outputspec, [('copes', 'copes'),
('varcopes', 'varcopes')]),
])
return modelfit
Use :class:`nipype.algorithms.modelgen.SpecifyModel` to generate design information.
"""
modelspec = pe.Node(interface=model.SpecifyModel(), name="modelspec")
"""
Use :class:`nipype.interfaces.fsl.Level1Design` to generate a run specific fsf
file for analysis
"""
level1design = pe.Node(interface=fsl.Level1Design(), name="level1design")
"""
Use :class:`nipype.interfaces.fsl.FEATModel` to generate a run specific mat
file for use by FILMGLS
"""
modelgen = pe.MapNode(interface=fsl.FEATModel(),
name='modelgen',
iterfield=['fsf_file', 'ev_files'])
"""
Use :class:`nipype.interfaces.fsl.FILMGLS` to estimate a model specified by a
mat file and a functional run
"""
modelestimate = pe.MapNode(interface=fsl.FILMGLS(smooth_autocorr=True,
mask_size=5,
threshold=1000),
name='modelestimate',
iterfield=['design_file', 'in_file'])
"""
Use :class:`nipype.interfaces.fsl.ContrastMgr` to generate contrast estimates
"""
def modelfit_fsl(wf_name='modelfit'):
"""
Fit 1st level GLM using FSL routines
Usage (TODO)
modelfit.inputs.inputspec.fwhm = 12
modelfit.inputs.inputspec.brain_mask = ['/opt/shared2/nipype-test/testblock/example_func_brain_mask.nii.gz', '/opt/shared2/nipype-test/testblock/example_func_brain_mask.nii.gz']
modelfit.inputs.inputspec.input_units = 'secs'
modelfit.inputs.inputspec.in_file = ['/opt/shared2/nipype-test/testblock/mc_data_brain.nii.gz', '/opt/shared2/nipype-test/testblock/mc_data_brain.nii.gz']
modelfit.inputs.inputspec.TR = 2
modelfit.inputs.inputspec.high_pass_filter_cutoff = 100 #sigma in TR
modelfit.inputs.inputspec.event_files = ['/opt/shared2/nipype-test/testblock/a']
cont1 = ['whisker', 'T', ['a', 'a'], [1.0, 0.0]]
cont2 = ['-whisker', 'T', ['a', 'a'], [-1.0, 0.0]]
cont3 = ['Task','F', [cont1, cont2]]
contrasts = [cont1]
modelfit.inputs.inputspec.contrasts = contrasts #TODO: change condition names
modelfit.inputs.inputspec.bases_function = {'dgamma': {'derivs': True}}
modelfit.inputs.inputspec.model_serial_correlations = True
#modelfit.write_graph('graph.dot');
modelfit.write_graph('graph.dot', graph2use='colored');
x=modelfit.run()
#x=modelfit.run(plugin='MultiProc', plugin_args={'n_procs': 8})
server.serve_content(modelfit)
"""
modelfit = pe.Workflow(name=wf_name)
"""
Set up a node to define all inputs required for the preprocessing workflow
"""
inputnode = pe.Node(interface=util.IdentityInterface(
fields=[
'in_file', 'ev_file', 'confounders', 'contrasts',
'high_pass_filter_cutoff', 'fwhm', 'interscan_interval', 'TR',
'input_units', 'bases_function', 'model_serial_correlations',
'brain_mask'
],
mandatory_inputs=True),
name='inputspec')
#TODO: eliminate brain mask
#inputnode.iterables=[('high_pass_filter_cutoff', [30, 60, 90, 120, 500])]
"""
Set up a node to define outputs for the preprocessing workflow
"""
outputnode = pe.Node(interface=util.IdentityInterface(
fields=['zstats', 'zfstats', 'copes', 'varcopes'],
mandatory_inputs=True),
name='outputspec')
# collect subject info
getsubjectinfo = pe.MapNode(util.Function(
input_names=['ev_file', 'confounders'],
output_names=['subject_info'],
function=get_subject_info),
name='getsubjectinfo',
iterfield=['confounders'])
# nipype.algorithms.modelgen.SpecifyModel to generate design information.
modelspec = pe.MapNode(interface=model.SpecifyModel(),
name="modelspec",
iterfield=['subject_info'])
# smooth #TODO: move into preproc pipeline
smooth = preproc.create_susan_smooth("smooth")
#smooth.get_node( "smooth").iterables=[('fwhm', [6., 8., 10., 12., 14., 16.])]
toSigma = pe.Node(interface=util.Function(
input_names=['high_pass_filter_cutoff', 'TR'],
output_names=['high_pass_filter_opstring'],
function=highpass_operand),
name='toSigma')
highpass = pe.MapNode(interface=fsl.ImageMaths(suffix='_tempfilt',
op_string=''),
iterfield=['in_file'],
name='highpass')
# Use nipype.interfaces.fsl.Level1Design to generate a run specific fsf file for analysis
level1design = pe.MapNode(interface=fsl.Level1Design(),
name="level1design",
iterfield='session_info')
# Use nipype.interfaces.fsl.FEATModel to generate a run specific mat file for use by FILMGLS
modelgen = pe.MapNode(interface=fsl.FEATModel(),
name='modelgen',
iterfield=['fsf_file', 'ev_files'])
# Use nipype.interfaces.fsl.FILMGLS to estimate a model specified by a mat file and a functional run
modelestimate = pe.MapNode(
interface=fsl.FILMGLS(smooth_autocorr=True, mask_size=5,
threshold=200),
name='modelestimate',
#iterfield=['design_file', 'in_file'])
iterfield=['in_file', 'design_file'])
# Use nipype.interfaces.fsl.ContrastMgr to generate contrast estimates
conestimate = pe.MapNode(interface=fsl.ContrastMgr(),
name='conestimate',
iterfield=[
'param_estimates', 'sigmasquareds',
'corrections', 'dof_file', 'tcon_file'
])
modelfit.connect([
(
inputnode,
smooth,
[
('in_file', 'inputnode.in_files'),
('fwhm', 'inputnode.fwhm'), # in iterable
('brain_mask', 'inputnode.mask_file')
]),
(smooth, highpass, [('outputnode.smoothed_files', 'in_file')]),
(inputnode, toSigma, [('high_pass_filter_cutoff',
'high_pass_filter_cutoff')]),
(inputnode, toSigma, [('TR', 'TR')]),
(toSigma, highpass, [('high_pass_filter_opstring', 'op_string')]),
(inputnode, getsubjectinfo, [('ev_file', 'ev_file'),
('confounders', 'confounders')]),
(getsubjectinfo, modelspec, [('subject_info', 'subject_info')]),
(highpass, modelspec, [('out_file', 'functional_runs')]),
(highpass, modelestimate, [('out_file', 'in_file')]),
(inputnode, modelspec, [
('input_units', 'input_units'),
('TR', 'time_repetition'),
('high_pass_filter_cutoff', 'high_pass_filter_cutoff'),
]),
(inputnode, level1design, [('TR', 'interscan_interval'),
('model_serial_correlations',
'model_serial_correlations'),
('bases_function', 'bases'),
('contrasts', 'contrasts')]),
(modelspec, level1design, [('session_info', 'session_info')]),
(level1design, modelgen, [('fsf_files', 'fsf_file'),
('ev_files', 'ev_files')]),
(modelgen, modelestimate, [('design_file', 'design_file')]),
(modelgen, conestimate, [('con_file', 'tcon_file')]),
(modelestimate, conestimate, [('param_estimates', 'param_estimates'),
('sigmasquareds', 'sigmasquareds'),
('corrections', 'corrections'),
('dof_file', 'dof_file')]),
(conestimate, outputnode, [('zstats', 'zstats'),
('zfstats', 'zfstats'), ('copes', 'copes'),
('varcopes', 'varcopes')])
])
return modelfit
cont6 = ['Trauma1 > Trauma2', 'T', ['trauma1_0', 'trauma1_1', 'trauma1_2', 'trauma1_3', 'trauma2_0', 'trauma2_1', 'trauma2_2', 'trauma2_3'], [0.25, 0.25, 0.25, 0.25, -0.25, -0.25, -0.25, -0.25 ]]
cont7 = ['Trauma1_01>relax1_01', 'T', ['trauma1_0', 'trauma1_1', 'relax1_0', 'relax1_1'], [0.5,0.5,-0.5,-0.5]]
contrasts = [cont1, cont2, cont3, cont4, cont5, cont6, cont7]
level1design.inputs.interscan_interval = tr
level1design.inputs.bases = {'dgamma': {'derivs': False}}
level1design.inputs.contrasts = contrasts
level1design.inputs.model_serial_correlations = True
"""
Use :class:`nipype.interfaces.fsl.FEATModel` to generate a run specific mat
file for use by FILMGLS
"""
modelgen = pe.Node(
interface=fsl.FEATModel(),
name='modelgen',
)
"""
Use :class:`nipype.interfaces.fsl.FILMGLS` to estimate a model specified by a
mat file and a functional run
"""
mask = pe.Node(interface= fsl.maths.ApplyMask(), name = 'mask')
modelestimate = pe.Node(
interface=fsl.FILMGLS(smooth_autocorr=True, mask_size=5, threshold=1000),
name='modelestimate',
)
def l1(preprocessing_dir,
bf_path = '~/ni_data/irfs/chr_beta1.txt',
debug=False,
exclude={},
habituation='confound',
highpass_sigma=225,
lowpass_sigma=False,
include={},
keep_work=False,
out_base="",
mask="",
match={},
tr=1,
workflow_name="generic",
modality="cbv",
n_jobs_percentage=1,
invert=False,
):
"""Calculate subject level GLM statistic scores.
Parameters
----------
bf_path : str, optional
Basis set path. It should point to a text file in the so-called FEAT/FSL "#2" format (1 entry per volume).
exclude : dict
A dictionary with any combination of "sessions", "subjects", "tasks" as keys and corresponding identifiers as values.
If this is specified matching entries will be excluded in the analysis.
debug : bool, optional
Whether to enable nipype debug mode.
This increases logging.
habituation : {"", "confound", "separate_contrast", "in_main_contrast"}, optional
How the habituation regressor should be handled.
Anything which evaluates as False (though we recommend "") means no habituation regressor will be introduced.
highpass_sigma : int, optional
Highpass threshold (in seconds).
include : dict
A dictionary with any combination of "sessions", "subjects", "tasks" as keys and corresponding identifiers as values.
If this is specified only matching entries will be included in the analysis.
invert : bool
If true the values will be inverted with respect to zero.
This is commonly used for iron nano-particle Cerebral Blood Volume (CBV) measurements.
keep_work : bool, optional
Whether to keep the work directory (containing all the intermediary workflow steps, as managed by nipypye).
This is useful for debugging and quality control.
out_base : str, optional
Path to the directory inside which both the working directory and the output directory will be created.
mask : str, optional
Path to the brain mask which shall be used to define the brain volume in the analysis.
This has to point to an existing NIfTI file containing zero and one values only.
n_jobs_percentage : float, optional
Percentage of the cores present on the machine which to maximally use for deploying jobs in parallel.
tr : int, optional
Repetition time, in seconds.
workflow_name : str, optional
Name of the workflow; this will also be the name of the final output directory produced under `out_dir`.
"""
from samri.pipelines.utils import bids_data_selection
preprocessing_dir = path.abspath(path.expanduser(preprocessing_dir))
out_base = path.abspath(path.expanduser(out_base))
data_selection = bids_data_selection(preprocessing_dir, structural_match=False, functional_match=match, subjects=False, sessions=False)
ind = data_selection.index.tolist()
out_dir = path.join(out_base,workflow_name)
workdir_name = workflow_name+'_work'
workdir = path.join(out_base,workdir_name)
if not os.path.exists(workdir):
os.makedirs(workdir)
data_selection.to_csv(path.join(workdir,'data_selection.csv'))
get_scan = pe.Node(name='get_scan', interface=util.Function(function=get_bids_scan,input_names=inspect.getargspec(get_bids_scan)[0], output_names=['scan_path','scan_type','task', 'nii_path', 'nii_name', 'events_name', 'subject_session', 'metadata_filename', 'dict_slice']))
get_scan.inputs.ignore_exception = True
get_scan.inputs.data_selection = data_selection
get_scan.inputs.bids_base = preprocessing_dir
get_scan.iterables = ("ind_type", ind)
eventfile = pe.Node(name='eventfile', interface=util.Function(function=corresponding_eventfile,input_names=inspect.getargspec(corresponding_eventfile)[0], output_names=['eventfile']))
if invert:
invert = pe.Node(interface=fsl.ImageMaths(), name="invert")
invert.inputs.op_string = '-mul -1'
specify_model = pe.Node(interface=SpecifyModel(), name="specify_model")
specify_model.inputs.input_units = 'secs'
specify_model.inputs.time_repetition = tr
specify_model.inputs.high_pass_filter_cutoff = highpass_sigma
level1design = pe.Node(interface=Level1Design(), name="level1design")
level1design.inputs.interscan_interval = tr
if bf_path:
bf_path = path.abspath(path.expanduser(bf_path))
level1design.inputs.bases = {"custom": {"bfcustompath":bf_path}}
else:
# We are not adding derivatives here, as these conflict with the habituation option.
# !!! This is not difficult to solve, and would only require the addition of an elif condition to the habituator definition, which would add multiple column copies for each of the derivs.
level1design.inputs.bases = {'gamma': {'derivs':True, 'gammasigma':30, 'gammadelay':10}}
level1design.inputs.model_serial_correlations = True
modelgen = pe.Node(interface=fsl.FEATModel(), name='modelgen')
#modelgen.inputs.ignore_exception = True
glm = pe.Node(interface=fsl.GLM(), name='glm', iterfield='design')
# glm.inputs.out_cope = "cope.nii.gz"
# glm.inputs.out_varcb_name = "varcb.nii.gz"
# #not setting a betas output file might lead to beta export in lieu of COPEs
# glm.inputs.out_file = "betas.nii.gz"
# glm.inputs.out_t_name = "t_stat.nii.gz"
# glm.inputs.out_p_name = "p_stat.nii.gz"
if mask == 'mouse':
mask = '/usr/share/mouse-brain-atlases/dsurqec_200micron_mask.nii'
else:
glm.inputs.mask = path.abspath(path.expanduser(mask))
glm.interface.mem_gb = 6
#glm.inputs.ignore_exception = True
out_file_name_base = 'sub-{{subject}}_ses-{{session}}_task-{{task}}_acq-{{acquisition}}_run-{{run}}_{{modality}}_{}.{}'
betas_filename = pe.Node(name='betas_filename', interface=util.Function(function=bids_dict_to_source,input_names=inspect.getargspec(bids_dict_to_source)[0], output_names=['filename']))
betas_filename.inputs.source_format = out_file_name_base.format('betas','nii.gz')
cope_filename = pe.Node(name='cope_filename', interface=util.Function(function=bids_dict_to_source,input_names=inspect.getargspec(bids_dict_to_source)[0], output_names=['filename']))
cope_filename.inputs.source_format = out_file_name_base.format('cope','nii.gz')
varcb_filename = pe.Node(name='varcb_filename', interface=util.Function(function=bids_dict_to_source,input_names=inspect.getargspec(bids_dict_to_source)[0], output_names=['filename']))
varcb_filename.inputs.source_format = out_file_name_base.format('varcb','nii.gz')
tstat_filename = pe.Node(name='tstat_filename', interface=util.Function(function=bids_dict_to_source,input_names=inspect.getargspec(bids_dict_to_source)[0], output_names=['filename']))
tstat_filename.inputs.source_format = out_file_name_base.format('tstat','nii.gz')
zstat_filename = pe.Node(name='zstat_filename', interface=util.Function(function=bids_dict_to_source,input_names=inspect.getargspec(bids_dict_to_source)[0], output_names=['filename']))
zstat_filename.inputs.source_format = out_file_name_base.format('zstat','nii.gz')
pstat_filename = pe.Node(name='pstat_filename', interface=util.Function(function=bids_dict_to_source,input_names=inspect.getargspec(bids_dict_to_source)[0], output_names=['filename']))
pstat_filename.inputs.source_format = out_file_name_base.format('pstat','nii.gz')
pfstat_filename = pe.Node(name='pfstat_filename', interface=util.Function(function=bids_dict_to_source,input_names=inspect.getargspec(bids_dict_to_source)[0], output_names=['filename']))
pfstat_filename.inputs.source_format = out_file_name_base.format('pfstat','nii.gz')
design_filename = pe.Node(name='design', interface=util.Function(function=bids_dict_to_source,input_names=inspect.getargspec(bids_dict_to_source)[0], output_names=['filename']))
design_filename.inputs.source_format = out_file_name_base.format('design','mat')
design_rename = pe.Node(interface=util.Rename(), name='design_rename')
datasink = pe.Node(nio.DataSink(), name='datasink')
datasink.inputs.base_directory = path.join(out_base,workflow_name)
datasink.inputs.parameterization = False
workflow_connections = [
(get_scan, eventfile, [('nii_path', 'timecourse_file')]),
(specify_model, level1design, [('session_info', 'session_info')]),
(level1design, modelgen, [('ev_files', 'ev_files')]),
(level1design, modelgen, [('fsf_files', 'fsf_file')]),
(modelgen, glm, [('design_file', 'design')]),
(modelgen, glm, [('con_file', 'contrasts')]),
(get_scan, datasink, [(('dict_slice',bids_dict_to_dir), 'container')]),
(get_scan, betas_filename, [('dict_slice', 'bids_dictionary')]),
(get_scan, cope_filename, [('dict_slice', 'bids_dictionary')]),
(get_scan, varcb_filename, [('dict_slice', 'bids_dictionary')]),
(get_scan, tstat_filename, [('dict_slice', 'bids_dictionary')]),
(get_scan, zstat_filename, [('dict_slice', 'bids_dictionary')]),
(get_scan, pstat_filename, [('dict_slice', 'bids_dictionary')]),
(get_scan, pfstat_filename, [('dict_slice', 'bids_dictionary')]),
(get_scan, design_filename, [('dict_slice', 'bids_dictionary')]),
(betas_filename, glm, [('filename', 'out_file')]),
(cope_filename, glm, [('filename', 'out_cope')]),
(varcb_filename, glm, [('filename', 'out_varcb_name')]),
(tstat_filename, glm, [('filename', 'out_t_name')]),
(zstat_filename, glm, [('filename', 'out_z_name')]),
(pstat_filename, glm, [('filename', 'out_p_name')]),
(pfstat_filename, glm, [('filename', 'out_pf_name')]),
(modelgen, design_rename, [('design_file', 'in_file')]),
(design_filename, design_rename, [('filename', 'format_string')]),
(glm, datasink, [('out_pf', '@pfstat')]),
(glm, datasink, [('out_p', '@pstat')]),
(glm, datasink, [('out_z', '@zstat')]),
(glm, datasink, [('out_t', '@tstat')]),
(glm, datasink, [('out_cope', '@cope')]),
(glm, datasink, [('out_varcb', '@varcb')]),
(glm, datasink, [('out_file', '@betas')]),
(design_rename, datasink, [('out_file', '@design')]),
]
if habituation:
level1design.inputs.orthogonalization = {1: {0:0,1:0,2:0}, 2: {0:1,1:1,2:0}}
specify_model.inputs.bids_condition_column = 'samri_l1_regressors'
specify_model.inputs.bids_amplitude_column = 'samri_l1_amplitude'
add_habituation = pe.Node(name='add_habituation', interface=util.Function(function=eventfile_add_habituation,input_names=inspect.getargspec(eventfile_add_habituation)[0], output_names=['out_file']))
# Regressor names need to be prefixed with "e" plus a numerator so that Level1Design will be certain to conserve the order.
add_habituation.inputs.original_stimulation_value='1stim'
add_habituation.inputs.habituation_value='2habituation'
workflow_connections.extend([
(eventfile, add_habituation, [('eventfile', 'in_file')]),
(add_habituation, specify_model, [('out_file', 'bids_event_file')]),
])
if not habituation:
specify_model.inputs.bids_condition_column = ''
level1design.inputs.contrasts = [('allStim','T', ['ev0'],[1])]
workflow_connections.extend([
(eventfile, specify_model, [('eventfile', 'bids_event_file')]),
])
#condition names as defined in eventfile_add_habituation:
elif habituation=="separate_contrast":
level1design.inputs.contrasts = [('stim','T', ['1stim','2habituation'],[1,0]),('hab','T', ['1stim','2habituation'],[0,1])]
elif habituation=="in_main_contrast":
level1design.inputs.contrasts = [('all','T', ['1stim','2habituation'],[1,1])]
elif habituation=="confound":
level1design.inputs.contrasts = [('stim','T', ["1stim", "2habituation"],[1,0])]
else:
print(habituation)
raise ValueError('The value you have provided for the `habituation` parameter, namely "{}", is invalid. Please choose one of: {{None, False,"","confound","in_main_contrast","separate_contrast"}}'.format(habituation))
if highpass_sigma or lowpass_sigma:
bandpass = pe.Node(interface=fsl.maths.TemporalFilter(), name="bandpass")
bandpass.inputs.highpass_sigma = highpass_sigma
bandpass.interface.mem_gb = 16
if lowpass_sigma:
bandpass.inputs.lowpass_sigma = lowpass_sigma
else:
bandpass.inputs.lowpass_sigma = tr
if invert:
workflow_connections.extend([
(get_scan, invert, [('nii_path', 'in_file')]),
(invert, bandpass, [('out_file', 'in_file')]),
(bandpass, specify_model, [('out_file', 'functional_runs')]),
(bandpass, glm, [('out_file', 'in_file')]),
(bandpass, datasink, [('out_file', '@ts_file')]),
(get_scan, bandpass, [('nii_name', 'out_file')]),
])
else:
workflow_connections.extend([
(get_scan, bandpass, [('nii_path', 'in_file')]),
(bandpass, specify_model, [('out_file', 'functional_runs')]),
(bandpass, glm, [('out_file', 'in_file')]),
(bandpass, datasink, [('out_file', '@ts_file')]),
(get_scan, bandpass, [('nii_name', 'out_file')]),
])
else:
if invert:
workflow_connections.extend([
(get_scan, invert, [('nii_path', 'in_file')]),
(invert, specify_model, [('out_file', 'functional_runs')]),
(invert, glm, [('out_file', 'in_file')]),
(invert, datasink, [('out_file', '@ts_file')]),
(get_scan, invert, [('nii_name', 'out_file')]),
])
else:
workflow_connections.extend([
(get_scan, specify_model, [('nii_path', 'functional_runs')]),
(get_scan, glm, [('nii_path', 'in_file')]),
(get_scan, datasink, [('nii_path', '@ts_file')]),
])
workflow_config = {'execution': {'crashdump_dir': path.join(out_base,'crashdump'),}}
if debug:
workflow_config['logging'] = {
'workflow_level':'DEBUG',
'utils_level':'DEBUG',
'interface_level':'DEBUG',
'filemanip_level':'DEBUG',
'log_to_file':'true',
}
workflow = pe.Workflow(name=workdir_name)
workflow.connect(workflow_connections)
workflow.base_dir = out_base
workflow.config = workflow_config
workflow.write_graph(dotfilename=path.join(workflow.base_dir,workdir_name,"graph.dot"), graph2use="hierarchical", format="png")
n_jobs = max(int(round(mp.cpu_count()*n_jobs_percentage)),2)
workflow.run(plugin="MultiProc", plugin_args={'n_procs' : n_jobs})
if not keep_work:
shutil.rmtree(path.join(out_base,workdir_name))