def make_kc_with_dynaclamp(kc_name,
kc_file,
inject,
tstart,
tend,
ggn_vm=None):
"""Read KC model from `kc_file`, inject current `inject` nA, apply
dynamic clamp `ggn_vm`, which should be a 2D array with time (ms)
in column 0, and voltage (mV) in column 1.
"""
global model_dict
kc = nu.create_cell(kc_name, filename=kc_file)
model_dict[kc] = None
iclamp = ephys.setup_current_clamp(kc.soma,
pos=0.5,
delay=Q_(tstart, 'ms'),
duration=Q_((tend - tstart), 'ms'),
amplitude=Q_(inject, 'nA'))
model_dict[iclamp] = None
ggn_g_vec = None
if ggn_vm is not None:
syn = h.GradedSyn(kc.soma(0.5))
for attr, value in GGN_KC_SYN_PARAMS.items():
setattr(syn, attr, value)
model_dict[syn] = None
ggn_comp = h.Section('ggn')
model_dict[ggn_comp] = None
h.setpointer(ggn_comp(0.5)._ref_v, 'vpre', syn)
ggn_vm_vec = h.Vector(ggn_vm[:, 1])
tvec = h.Vector(ggn_vm[:, 0])
model_dict[tvec] = None
# vec.play(var_reference, t, continuous) for interpolating
ret = ggn_vm_vec.play(ggn_comp(0.5)._ref_v, tvec, 1)
print('####', ret)
model_dict[ggn_vm_vec] = None
ggn_g_vec = h.Vector()
ggn_g_vec.record(syn._ref_g)
model_dict[ggn_g_vec] = None
kc_vm_vec = h.Vector()
kc_vm_vec.record(kc.soma(0.5)._ref_v)
model_dict[kc_vm_vec] = None
print('Built model')
return (kc_vm_vec, ggn_g_vec)
def __init__(self, filename, simtime, delta, stabilization_time=0):
"""Create spike times for IG using firing rate over time from
filename.
This disregards stimulus onset and duration, and only uses the
information from the file.
"""
spikerate = np.load(filename)
interp = interpolate.interp1d(spikerate['t'], spikerate['Vm'])
rate_fn = lambda t: interp(t)
spike_times = nhpp.nhpp_thinning(rate_fn, simtime, delta) * 1e3 # second to millisecond
spike_times = spike_times[spike_times > stabilization_time].copy()
self.stimvec = h.Vector(spike_times)
self.vecstim = h.VecStim()
self.vecstim.play(self.stimvec)
def setup_mech_rec(cable, mechname, field):
"""Record the specified field of the mechanism `mechname` from all
segments of the cable"""
vecs = []
for n in range(cable.nseg):
vec = h.Vector()
# https://www.neuron.yale.edu/phpBB2/viewtopic.php?f=8&t=1442 tells how nrn counts node pos
pos = (0.5 + n) / cable.nseg
print('Measuring {}.{} of segment {} at {}'.format(
mechname, field, n, pos))
if pos > 1.0:
pos = 1.0
mech = getattr(cable(pos), mechname)
fieldref = getattr(mech, '_ref_{}'.format(field))
vec.record(fieldref)
vecs.append(vec)
return vecs
def setup_sec_rec(cable, field, t=None):
"""Create and return a list of vectors to record `field` from every segment of
the cable"""
vecs = []
for seg in cable:
vec = h.Vector()
# # https://www.neuron.yale.edu/phpBB2/viewtopic.php?f=8&t=1442 tells how nrn counts node pos
# pos = (0.5 + n) / cable.nseg
# print('Measuring Vm of segment', n, 'at', pos)
# if pos > 1.0:
# pos = 1.0
if t is None:
vec.record(getattr(seg, '_ref_{}'.format(field)))
else:
vec.record(getattr(seg, '_ref_{}'.format(field)), t)
vecs.append(vec)
return vecs
rec_nodes.append(synnode)
synidx = rec_nodes.index(synnode)
# alpha_syn = insert_alphasynapse(synsec(0.5), onset=args.onset, gmax=args.gsyn, tau=args.tau)
clamp = ephys.setup_voltage_clamp(synsec,
Q_('{}mV'.format(args.Em)),
Q_('{}ms'.format(args.onset)),
Q_('{}mV'.format(args.Em)),
Q_('0ms'),
Q_('{}mV'.format(args.vclamp)),
Q_('{}ms'.format(args.simtime -
args.onset)),
pos=0.5,
rs=Q_('0.01ohm'))
t_vec = h.Vector(np.arange(0, args.simtime,
h.dt * 10)) # record data every 10 timesteps
tabs = [nu.setup_recording(sec, 0.5, 'v', t_vec) for sec in recsecs]
ts = datetime.now()
# Initialize and run
h.tstop = args.simtime
print('Setting Vm to {}'.format(args.Em))
h.finitialize(args.Em)
h.fcurrent()
while h.t < h.tstop:
h.fadvance()
# h.init()
# h.run()
te = datetime.now()
delta = te - ts
print('Time for', h.tstop * 1e-3, 's simulation =',
inject_solo = make_driving_current(kc_solo.soma, 0.5, args.amp[0], 1.0,
tstart, tend)
else:
inject = ephys.setup_current_clamp(kc.soma,
delay=Q_(tstart, 'ms'),
duration=Q_((tend - tstart), 'ms'),
amplitude=Q_(args.amp[0], 'nA'),
pos=0.5)
inject_solo = ephys.setup_current_clamp(kc_solo.soma,
delay=Q_(tstart, 'ms'),
duration=Q_((tend - tstart),
'ms'),
amplitude=Q_(
args.amp[0], 'nA'),
pos=0.5)
tvec = h.Vector()
kc_vvec = h.Vector()
ggn_ca_vvec = h.Vector()
ivec = h.Vector()
kc_solo_vvec = h.Vector()
ivec_solo = h.Vector()
tvec.record(h._ref_t)
kc_vvec.record(kc.soma(0.5)._ref_v)
ggn_ca_vvec.record(model['ggn_pre'][0][0](model['ggn_pre'][0][1])._ref_v)
ivec.record(inject._ref_i)
kc_solo_vvec.record(kc_solo.soma(0.5)._ref_v)
ivec_solo.record(inject_solo._ref_i)
fb_dict = {'t': tvec, 'i': ivec, 'kc': kc_vvec, 'ca': ggn_ca_vvec}
def main():
parser = make_parser()
args = parser.parse_args()
logger.info('Command line args: {}'.format(str(sys.argv)))
print(args.ggn_vm_file)
# KCs with GGN inhibition
inhibited_vec = defaultdict(list)
solo_vec_list = []
tstart = Q_(args.tstart).to('ms').m
tend = Q_(args.tend).to('ms').m
istart = Q_(args.istart).to('nA').m
iend = Q_(args.iend).to('nA').m
di = Q_(args.di).to('nA').m
irange = np.arange(istart, iend + di / 2.0, di)
logger.info('Starting current: {} nA'.format(istart))
logger.info('End current: {} nA'.format(iend))
logger.info('Increment: {} nA'.format(di))
logger.info('current range: {}'.format(irange))
ggn_vm = {}
for input_file in args.ggn_vm_file:
ggn_vm[input_file] = np.loadtxt(input_file)
for inject in irange:
for input_file, vm in ggn_vm.items():
kc_vvec, ggn_gvec = make_kc_with_dynaclamp(args.kc, args.kc_file,
inject, tstart, tend,
vm)
inhibited_vec[input_file].append((kc_vvec, ggn_gvec))
# KC without any inhibition
kc_vvec, ggn_gvec = make_kc_with_dynaclamp(args.kc, args.kc_file,
inject, tstart, tend)
solo_vec_list.append(kc_vvec)
tvec = h.Vector()
tvec.record(h._ref_t)
h.tstop = tend
print('Init')
h.init()
print('Run')
h.run()
print('Finished simulation')
fig, ax = plt.subplots(nrows=len(irange) + 1,
ncols=len(ggn_vm) + 1,
sharex='all',
sharey='all')
t = np.array(tvec.x)
solo_data = []
for ii, vvec in enumerate(solo_vec_list):
ax[ii + 1, 0].plot(tvec, vvec, color='#e66101')
solo_data.append(np.array(vvec.x))
combined = np.vstack(solo_data)
prefix = 'UTC' + timestamp.strftime('%Y%m%d_%H%M%S')
fname = '{}_solo_kc.npz'.format(prefix)
np.savez(fname, t=t, vm=combined, inject=irange)
logger.info('Saved solo KC data in {}'.format(fname))
for jj, input_file in enumerate(args.ggn_vm_file):
fname = '{}_{}.npz'.format(prefix, os.path.basename(input_file))
data = []
kc_vm_list = inhibited_vec[input_file]
for ii, (vvec, gvec) in enumerate(kc_vm_list):
data.append(np.array(vvec.x))
ax[ii + 1, jj + 1].plot(tvec, vvec, color='#e66101')
ax[ii + 1, 0].set_ylabel('{} pA'.format(irange[ii] * 1e3))
# ax[ii+1, 0].set_ylabel('{} pA'.format(int(np.round(irange[ii]*1e3)))) # to avoid decimal point when integer values
# ax[0, jj+1].plot(tvec, gvec)
# ax[0, jj+1].plot(ggn_vm[input_file][:,0], ggn_vm[input_file][:,1])
ax[0, jj + 1].set_title(input_file)
combined = np.vstack(data)
np.savez(fname,
combined=combined,
irange=irange,
ggn_vm=ggn_vm[input_file])
logger.info(
'Saved data from dynamic clamp with input from {} in {}'.format(
input_file, fname))
for axis in ax.flat:
axis.set_xlim(250, 1750)
fig.set_size_inches(210 / 25.4, 290 / 25.4)
fig.tight_layout()
fig.savefig('{}_KC_dynamic_range_with_ggn_vm.svg'.format(prefix))
plt.show()
print('End')
