def display_flanker(self, flanker_type, location, direction):
# Left flanker
if direction == "left":
if flanker_type == "congruent":
stimulus = self.img_left_congruent
elif flanker_type == "incongruent":
stimulus = self.img_left_incongruent
else:
stimulus = self.img_left_neutral
# Right flanker
else:
if flanker_type == "congruent":
stimulus = self.img_right_congruent
elif flanker_type == "incongruent":
stimulus = self.img_right_incongruent
else:
stimulus = self.img_right_neutral
# Offset the flanker stimulus to above/below fixation
if location == "top":
display.image(
self.screen, stimulus, "center",
self.screen_y/2 - self.flanker_h - self.TARGET_OFFSET)
elif location == "bottom":
display.image(self.screen, stimulus, "center",
self.screen_y/2 + self.TARGET_OFFSET)
def display_flanker(self, flanker_type, location, direction):
# Left flanker
if direction == "left":
if flanker_type == "congruent":
stimulus = self.img_left_congruent
elif flanker_type == "incongruent":
stimulus = self.img_left_incongruent
else:
stimulus = self.img_left_neutral
# Right flanker
else:
if flanker_type == "congruent":
stimulus = self.img_right_congruent
elif flanker_type == "incongruent":
stimulus = self.img_right_incongruent
else:
stimulus = self.img_right_neutral
# Offset the flanker stimulus to above/below fixation
if location == "top":
display.image(
self.screen, stimulus, "center",
self.screen_y / 2 - self.flanker_h - self.TARGET_OFFSET)
elif location == "bottom":
display.image(self.screen, stimulus, "center",
self.screen_y / 2 + self.TARGET_OFFSET)
def run(self):
# Instructions
self.screen.blit(self.background, (0, 0))
display.text(self.screen, self.font, "Attentional Network Test",
"center", self.screen_y / 2 - 300)
display.text(
self.screen, self.font,
"Keep your eyes on the fixation cross at the "
"start of each trial:", 100, self.screen_y / 2 - 200)
display.image(self.screen, self.img_fixation, "center",
self.screen_y / 2 - 150)
display.text(self.screen, self.font,
"A set of arrows will appear somewhere on the screen:",
100, self.screen_y / 2 - 100)
display.image(self.screen, self.img_left_incongruent, "center",
self.screen_y / 2 - 50)
display.text(
self.screen, self.font,
"Use the Left / Right arrow keys to indicate "
"the direction of the CENTER arrow.", 100, self.screen_y / 2 + 50)
display.text(self.screen, self.font,
"In example above, you should press the Left arrow.", 100,
self.screen_y / 2 + 100)
display.text_space(self.screen, self.font, "center",
(self.screen_y / 2) + 300)
pygame.display.flip()
display.wait_for_space()
# Instructions Practice
self.screen.blit(self.background, (0, 0))
display.text(self.screen, self.font,
"We'll begin with some practice trials...", "center",
"center")
display.text_space(self.screen, self.font, "center",
self.screen_y / 2 + 100)
pygame.display.flip()
display.wait_for_space()
# Practice trials
self.run_block(0, 1, "practice")
# Instructions Practice End
self.screen.blit(self.background, (0, 0))
display.text(self.screen, self.font,
"We will now begin the main trials...", 100,
self.screen_y / 2 - 50)
display.text(self.screen, self.font,
"You will not receive feedback after each trial.", 100,
self.screen_y / 2 + 50)
display.text_space(self.screen, self.font, "center",
self.screen_y / 2 + 200)
pygame.display.flip()
display.wait_for_space()
# Main task
for i in range(self.NUM_BLOCKS):
self.run_block(i, self.NUM_BLOCKS, "main")
# Create trial number column
self.all_data["trial"] = list(range(1, len(self.all_data) + 1))
# Rearrange the dataframe
columns = [
'trial', 'block', 'congruency', 'cue', 'location', 'fixationTime',
'ITI', 'direction', 'response', 'correct', 'RT'
]
self.all_data = self.all_data[columns]
# End screen
self.screen.blit(self.background, (0, 0))
display.text(self.screen, self.font, "End of task", "center", "center")
display.text_space(self.screen, self.font, "center",
self.screen_y / 2 + 100)
pygame.display.flip()
display.wait_for_space()
print("- ANT complete")
return self.all_data
def display_trial(self, trial_num, data, trial_type):
# Check for a quit press after stimulus was shown
for event in pygame.event.get():
if event.type == KEYDOWN and event.key == K_F12:
sys.exit(0)
# Display fixation
self.screen.blit(self.background, (0, 0))
display.image(self.screen, self.img_fixation, "center", "center")
pygame.display.flip()
display.wait(data["fixationTime"][trial_num])
# Display cue
self.screen.blit(self.background, (0, 0))
cue_type = data["cue"][trial_num]
if cue_type == "nocue":
# Display fixation in the center
display.image(self.screen, self.img_fixation, "center", "center")
elif cue_type == "center":
# Display cue in the center
display.image(self.screen, self.img_cue, "center", "center")
elif cue_type == "double":
# Display fixation in the center
display.image(self.screen, self.img_fixation, "center", "center")
# Display cue above and below fixation
display.image(
self.screen, self.img_cue, "center",
self.screen_y / 2 - self.fixation_h - self.TARGET_OFFSET)
display.image(self.screen, self.img_cue, "center",
self.screen_y / 2 + self.TARGET_OFFSET)
elif cue_type == "spatial":
cue_location = data["location"][trial_num]
# Display fixation in the center
display.image(self.screen, self.img_fixation, "center", "center")
# Display cue at target location
if cue_location == "top":
display.image(
self.screen, self.img_cue, "center",
self.screen_y / 2 - self.fixation_h - self.TARGET_OFFSET)
elif cue_location == "bottom":
display.image(self.screen, self.img_cue, "center",
self.screen_y / 2 + self.TARGET_OFFSET)
pygame.display.flip()
# Display cue for certain duration
display.wait(self.CUE_DURATION)
# Prestim interval with fixation
self.screen.blit(self.background, (0, 0))
display.image(self.screen, self.img_fixation, "center", "center")
pygame.display.flip()
display.wait(self.PRE_STIM_FIXATION_DURATION)
# Display flanker target
self.screen.blit(self.background, (0, 0))
display.image(self.screen, self.img_fixation, "center", "center")
self.display_flanker(data["congruency"][trial_num],
data["location"][trial_num],
data["direction"][trial_num])
pygame.display.flip()
start_time = int(round(time.time() * 1000))
# Clear the event queue before checking for responses
pygame.event.clear()
response = "NA"
wait_response = True
while wait_response:
for event in pygame.event.get():
if event.type == KEYDOWN and event.key == K_LEFT:
response = "left"
wait_response = False
elif event.type == KEYDOWN and event.key == K_RIGHT:
response = "right"
wait_response = False
elif event.type == KEYDOWN and event.key == K_F12:
sys.exit(0)
end_time = int(round(time.time() * 1000))
# If time limit has been reached, consider it a missed trial
if end_time - start_time >= self.FLANKER_DURATION:
wait_response = False
# Store reaction time and response
rt = int(round(time.time() * 1000)) - start_time
data.set_value(trial_num, 'RT', rt)
data.set_value(trial_num, 'response', response)
correct = 1 if response == data["direction"][trial_num] else 0
data.set_value(trial_num, 'correct', correct)
# Display feedback if practice trials
if trial_type == "practice":
self.screen.blit(self.background, (0, 0))
if correct == 1:
display.text(self.screen, self.font, "correct", "center",
"center", (0, 255, 0))
else:
display.text(self.screen, self.font, "incorrect", "center",
"center", (255, 0, 0))
pygame.display.flip()
display.wait(self.FEEDBACK_DURATION)
# Display fixation during ITI
self.screen.blit(self.background, (0, 0))
display.image(self.screen, self.img_fixation, "center", "center")
pygame.display.flip()
iti = self.ITI_MAX - rt - data["fixationTime"][trial_num]
data.set_value(trial_num, 'ITI', iti)
display.wait(iti)
def display_trial(self, i, data):
# Randomly choose font size for this trial
size_index = random.randint(0, len(self.stim_fonts) - 1)
trial_font = self.stim_fonts[size_index]
key_press = 0
data.set_value(i, 'RT', 1150)
# Display number
self.screen.blit(self.background, (0, 0))
display.text(self.screen, trial_font, str(data["stimulus"][i]),
"center", "center", (255, 255, 255))
pygame.display.flip()
# Get start time in ms
start_time = int(round(time.time() * 1000))
# Clear the event queue before checking for responses
pygame.event.clear()
wait_response = True
while wait_response:
for event in pygame.event.get():
if event.type == KEYDOWN and event.key == K_SPACE:
key_press = 1
data.set_value(i, 'RT',
int(round(time.time() * 1000)) - start_time)
elif event.type == KEYDOWN and event.key == K_F12:
sys.exit(0)
end_time = int(round(time.time() * 1000))
# Stop this loop if stim duration has passed
if end_time - start_time >= self.STIM_DURATION:
wait_response = False
# Display mask
self.screen.blit(self.background, (0, 0))
display.image(self.screen, self.img_mask, "center", "center")
pygame.display.flip()
wait_response = True
while wait_response:
for event in pygame.event.get():
if event.type == KEYDOWN and event.key == K_SPACE:
if key_press == 0:
key_press = 1
data.set_value(
i, 'RT',
int(round(time.time() * 1000)) - start_time)
elif event.type == KEYDOWN and event.key == K_F12:
sys.exit(0)
end_time = int(round(time.time() * 1000))
# Stop this loop if mask duration has passed
if end_time - start_time >= self.MASK_DURATION:
wait_response = False
# Check if response is correct
if data["stimulus"][i] == 3:
if key_press == 0:
accuracy = 1
else:
accuracy = 0
else:
if key_press == 0:
accuracy = 0
else:
accuracy = 1
# Store key press data in dataframe
data.set_value(i, 'key press', key_press)
data.set_value(i, 'accuracy', accuracy)
data.set_value(i, 'stimSize', self.STIMSIZES_PT[size_index])
def run(self):
# Instructions
self.screen.blit(self.background, (0, 0))
display.text(self.screen, self.font, "Attentional Network Test",
"center", self.screen_y/2 - 300)
display.text(self.screen, self.font,
"Keep your eyes on the fixation cross at the "
"start of each trial:",
100, self.screen_y/2 - 200)
display.image(self.screen, self.img_fixation,
"center", self.screen_y/2 - 150)
display.text(self.screen, self.font,
"A set of arrows will appear somewhere on the screen:",
100, self.screen_y/2 - 100)
display.image(self.screen, self.img_left_incongruent,
"center", self.screen_y/2 - 50)
display.text(self.screen, self.font,
"Use the Left / Right arrow keys to indicate "
"the direction of the CENTER arrow.",
100, self.screen_y/2 + 50)
display.text(self.screen, self.font,
"In example above, you should press the Left arrow.",
100, self.screen_y/2 + 100)
display.text_space(self.screen, self.font,
"center", (self.screen_y/2) + 300)
pygame.display.flip()
display.wait_for_space()
# Instructions Practice
self.screen.blit(self.background, (0, 0))
display.text(self.screen, self.font,
"We'll begin with a some practice trials...",
"center", "center")
display.text_space(self.screen, self.font,
"center", self.screen_y/2 + 100)
pygame.display.flip()
display.wait_for_space()
# Practice trials
self.run_block(0, 1, "practice")
# Instructions Practice End
self.screen.blit(self.background, (0, 0))
display.text(self.screen, self.font,
"We will now begin the main trials...",
100, self.screen_y/2 - 50)
display.text(self.screen, self.font,
"You will not receive feedback after each trial.",
100, self.screen_y/2 + 50)
display.text_space(self.screen, self.font,
"center", self.screen_y/2 + 200)
pygame.display.flip()
display.wait_for_space()
# Main task
for i in range(self.NUM_BLOCKS):
self.run_block(i, self.NUM_BLOCKS, "main")
# Create trial number column
self.all_data["trial"] = range(1, len(self.all_data) + 1)
# Rearrange the dataframe
columns = ['trial', 'block', 'congruency', 'cue', 'location',
'fixationTime', 'ITI', 'direction',
'response', 'correct', 'RT']
self.all_data = self.all_data[columns]
# End screen
self.screen.blit(self.background, (0, 0))
display.text(self.screen, self.font, "End of task", "center", "center")
display.text_space(self.screen, self.font,
"center", self.screen_y/2 + 100)
pygame.display.flip()
display.wait_for_space()
print "- ANT complete"
return self.all_data
def display_trial(self, trial_num, data, trial_type):
# Check for a quit press after stimulus was shown
for event in pygame.event.get():
if event.type == KEYDOWN and event.key == K_F12:
sys.exit(0)
# Display fixation
self.screen.blit(self.background, (0, 0))
display.image(self.screen, self.img_fixation, "center", "center")
pygame.display.flip()
display.wait(data["fixationTime"][trial_num])
# Display cue
self.screen.blit(self.background, (0, 0))
cue_type = data["cue"][trial_num]
if cue_type == "nocue":
# Display fixation in the center
display.image(self.screen, self.img_fixation, "center", "center")
elif cue_type == "center":
# Display cue in the center
display.image(self.screen, self.img_cue, "center", "center")
elif cue_type == "double":
# Display fixation in the center
display.image(self.screen, self.img_fixation, "center", "center")
# Display cue above and below fixation
display.image(
self.screen, self.img_cue, "center",
self.screen_y/2 - self.fixation_h - self.TARGET_OFFSET)
display.image(self.screen, self.img_cue,
"center", self.screen_y/2 + self.TARGET_OFFSET)
elif cue_type == "spatial":
cue_location = data["location"][trial_num]
# Display fixation in the center
display.image(self.screen, self.img_fixation, "center", "center")
# Display cue at target location
if cue_location == "top":
display.image(
self.screen, self.img_cue, "center",
self.screen_y/2 - self.fixation_h - self.TARGET_OFFSET)
elif cue_location == "bottom":
display.image(self.screen, self.img_cue, "center",
self.screen_y/2 + self.TARGET_OFFSET)
pygame.display.flip()
# Display cue for certain duration
display.wait(self.CUE_DURATION)
# Prestim interval with fixation
self.screen.blit(self.background, (0, 0))
display.image(self.screen, self.img_fixation, "center", "center")
pygame.display.flip()
display.wait(self.PRE_STIM_FIXATION_DURATION)
# Display flanker target
self.screen.blit(self.background, (0, 0))
display.image(self.screen, self.img_fixation, "center", "center")
self.display_flanker(data["congruency"][trial_num],
data["location"][trial_num],
data["direction"][trial_num])
pygame.display.flip()
start_time = int(round(time.time() * 1000))
# Clear the event queue before checking for responses
pygame.event.clear()
response = "NA"
wait_response = True
while wait_response:
for event in pygame.event.get():
if event.type == KEYDOWN and event.key == K_LEFT:
response = "left"
wait_response = False
elif event.type == KEYDOWN and event.key == K_RIGHT:
response = "right"
wait_response = False
elif event.type == KEYDOWN and event.key == K_F12:
sys.exit(0)
end_time = int(round(time.time() * 1000))
# If time limit has been reached, consider it a missed trial
if end_time - start_time >= self.FLANKER_DURATION:
wait_response = False
# Store reaction time and response
rt = int(round(time.time() * 1000)) - start_time
data.set_value(trial_num, 'RT', rt)
data.set_value(trial_num, 'response', response)
correct = 1 if response == data["direction"][trial_num] else 0
data.set_value(trial_num, 'correct', correct)
# Display feedback if practice trials
if trial_type == "practice":
self.screen.blit(self.background, (0, 0))
if correct == 1:
display.text(self.screen, self.font, "correct",
"center", "center", (0, 255, 0))
else:
display.text(self.screen, self.font, "incorrect",
"center", "center", (255, 0, 0))
pygame.display.flip()
display.wait(self.FEEDBACK_DURATION)
# Display fixation during ITI
self.screen.blit(self.background, (0, 0))
display.image(self.screen, self.img_fixation, "center", "center")
pygame.display.flip()
iti = self.ITI_MAX - rt - data["fixationTime"][trial_num]
data.set_value(trial_num, 'ITI', iti)
display.wait(iti)
def display_trial(self, df, i, r, trial_type):
# Clear screen
self.screen.blit(self.background, (0, 0))
pygame.display.flip()
# Display number sequence
self.display_sequence(r['set'])
# Display probe warning
self.screen.blit(self.background, (0, 0))
display.text(self.screen, self.stim_font, "+", "center", "center")
pygame.display.flip()
display.wait(self.PROBE_WARN_DURATION)
# Display blank screen
display.blank_screen(self.screen, self.background,
self.BETWEEN_STIM_DURATION)
# Display probe
self.screen.blit(self.background, (0, 0))
display.text(self.screen, self.stim_font, r['probe'], "center",
"center", (0, 0, 255))
# Display key reminders if practice trials
if trial_type == "practice":
display.image(self.screen, self.img_left,
450 - self.img_left.get_rect().width / 2,
self.screen_y / 2 + 150)
yes_text = self.font.render("(yes)", 1, (0, 0, 0))
display.text(self.screen, self.font, yes_text,
450 - yes_text.get_rect().width / 2,
self.screen_y / 2 + 160)
display.image(
self.screen, self.img_right,
self.screen_x - 450 - self.img_right.get_rect().width / 2,
self.screen_y / 2 + 150)
no_text = self.font.render("(no)", 1, (0, 0, 0))
display.text(self.screen, self.font, no_text,
self.screen_x - 450 - no_text.get_rect().width / 2,
self.screen_y / 2 + 160)
pygame.display.flip()
start_time = int(round(time.time() * 1000))
# Clear the event queue before checking for responses
pygame.event.clear()
wait_response = True
while wait_response:
for event in pygame.event.get():
if event.type == KEYDOWN and event.key == K_LEFT:
df.set_value(i, "response", "present")
wait_response = False
elif event.type == KEYDOWN and event.key == K_RIGHT:
df.set_value(i, "response", "absent")
wait_response = False
elif event.type == KEYDOWN and event.key == K_F12:
sys.exit(0)
end_time = int(round(time.time() * 1000))
# If time limit has been reached, consider it a missed trial
if end_time - start_time >= self.PROBE_DURATION:
wait_response = False
# Store RT
rt = int(round(time.time() * 1000)) - start_time
df.set_value(i, "RT", rt)
# Display blank screen
display.blank_screen(self.screen, self.background,
self.BETWEEN_STIM_DURATION)
# Display feedback
self.screen.blit(self.background, (0, 0))
if rt >= self.PROBE_DURATION:
df.set_value(i, "correct", 0)
display.text(self.screen, self.font, "too slow", "center",
"center", (255, 165, 0))
else:
if df["probeType"][i] == df["response"][i]:
df.set_value(i, "correct", 1)
display.text(self.screen, self.font, "correct", "center",
"center", (0, 255, 0))
else:
df.set_value(i, "correct", 0)
display.text(self.screen, self.font, "incorrect", "center",
"center", (255, 0, 0))
pygame.display.flip()
display.wait(self.FEEDBACK_DURATION)
# Display blank screen (ITI)
display.blank_screen(self.screen, self.background, self.ITI)
def display_trial(self, df, i, r, trial_type):
# Clear screen
self.screen.blit(self.background, (0, 0))
pygame.display.flip()
# Display number sequence
self.display_sequence(r['set'])
# Display probe warning
self.screen.blit(self.background, (0, 0))
display.text(self.screen, self.stim_font, "+", "center", "center")
pygame.display.flip()
display.wait(self.PROBE_WARN_DURATION)
# Display blank screen
display.blank_screen(self.screen, self.background,
self.BETWEEN_STIM_DURATION)
# Display probe
self.screen.blit(self.background, (0, 0))
display.text(self.screen, self.stim_font, r['probe'],
"center", "center", (0, 0, 255))
# Display key reminders if practice trials
if trial_type == "practice":
display.image(self.screen, self.img_left,
450 - self.img_left.get_rect().width/2,
self.screen_y/2 + 150)
yes_text = self.font.render("(yes)", 1, (0, 0, 0))
display.text(self.screen, self.font, yes_text,
450 - yes_text.get_rect().width/2,
self.screen_y/2 + 160)
display.image(
self.screen, self.img_right,
self.screen_x - 450 - self.img_right.get_rect().width/2,
self.screen_y/2 + 150)
no_text = self.font.render("(no)", 1, (0, 0, 0))
display.text(self.screen, self.font, no_text,
self.screen_x - 450 - no_text.get_rect().width/2,
self.screen_y/2 + 160)
pygame.display.flip()
start_time = int(round(time.time() * 1000))
# Clear the event queue before checking for responses
pygame.event.clear()
wait_response = True
while wait_response:
for event in pygame.event.get():
if event.type == KEYDOWN and event.key == K_LEFT:
df.set_value(i, "response", "present")
wait_response = False
elif event.type == KEYDOWN and event.key == K_RIGHT:
df.set_value(i, "response", "absent")
wait_response = False
elif event.type == KEYDOWN and event.key == K_F12:
sys.exit(0)
end_time = int(round(time.time() * 1000))
# If time limit has been reached, consider it a missed trial
if end_time - start_time >= self.PROBE_DURATION:
wait_response = False
# Store RT
rt = int(round(time.time() * 1000)) - start_time
df.set_value(i, "RT", rt)
# Display blank screen
display.blank_screen(self.screen, self.background,
self.BETWEEN_STIM_DURATION)
# Display feedback
self.screen.blit(self.background, (0, 0))
if rt >= self.PROBE_DURATION:
df.set_value(i, "correct", 0)
display.text(self.screen, self.font, "too slow",
"center", "center", (255, 165, 0))
else:
if df["probeType"][i] == df["response"][i]:
df.set_value(i, "correct", 1)
display.text(self.screen, self.font, "correct",
"center", "center", (0, 255, 0))
else:
df.set_value(i, "correct", 0)
display.text(self.screen, self.font, "incorrect",
"center", "center", (255, 0, 0))
pygame.display.flip()
display.wait(self.FEEDBACK_DURATION)
# Display blank screen (ITI)
display.blank_screen(self.screen, self.background, self.ITI)