Hi,
I am working on a lexical decision task in which multiple lists of words are randomly selected similarly to what suggested here.
Essentially, one loop trial is built inside of another block, in order to allow the program to pick a list of words randomly, and then randomly present the words contained in that list.
What I I am trying to do now, is setting up trigger codes for the words. To do that, I need to refer to the trigger codes that are in the trigger column of each of the wordlist csv files.
However, I can’t find a way to do that in the Coder. Here is a excerpt of my code, in case it helps.
# set up handler to look after randomisation of conditions etc
blocks = data.TrialHandler(nReps=1, method='random',
extraInfo=expInfo, originPath=-1,
trialList=data.importConditions('conditions.csv'),
seed=None, name='blocks')
thisExp.addLoop(blocks) # add the loop to the experiment
thisBlock = blocks.trialList[0] # so we can initialise stimuli with some values
# abbreviate parameter names if possible (e.g. rgb = thisBlock.rgb)
if thisBlock != None:
for paramName in thisBlock.keys():
exec(paramName + '= thisBlock.' + paramName)
for thisBlock in blocks:
currentLoop = blocks
# abbreviate parameter names if possible (e.g. rgb = thisBlock.rgb)
if thisBlock != None:
for paramName in thisBlock.keys():
exec(paramName + '= thisBlock.' + paramName)
# set up handler to look after randomisation of conditions etc
trials = data.TrialHandler(nReps=1, method='random',
extraInfo=expInfo, originPath=-1,
trialList=data.importConditions(conditions_file),
seed=None, name='trials')
thisExp.addLoop(trials) # add the loop to the experiment
thisTrial = trials.trialList[0] # so we can initialise stimuli with some values
# abbreviate parameter names if possible (e.g. rgb = thisTrial.rgb)
if thisTrial != None:
for paramName in thisTrial.keys():
exec(paramName + '= thisTrial.' + paramName)
for thisTrial in trials:
currentLoop = trials
# abbreviate parameter names if possible (e.g. rgb = thisTrial.rgb)
if thisTrial != None:
for paramName in thisTrial.keys():
exec(paramName + '= thisTrial.' + paramName)
# ------Prepare to start Routine "TRIAL"-------
t = 0
TRIALClock.reset() # clock
frameN = -1
continueRoutine = True
# update component parameters for each repeat
trial_text.setText(word)
trial_resp = event.BuilderKeyResponse()
# keep track of which components have finished
TRIALComponents = [trial_text, trial_resp]
for thisComponent in TRIALComponents:
if hasattr(thisComponent, 'status'):
thisComponent.status = NOT_STARTED
# -------Start Routine "TRIAL"-------
while continueRoutine:
# get current time
t = TRIALClock.getTime()
frameN = frameN + 1 # number of completed frames (so 0 is the first frame)
# update/draw components on each frame
# *trial_text* updates
if t >= 0.0 and trial_text.status == NOT_STARTED:
# keep track of start time/frame for later
trial_text.tStart = t
trial_text.frameNStart = frameN # exact frame index
trial_text.setAutoDraw(True)
frameRemains = 0.0 + .300- win.monitorFramePeriod * 0.75 # most of one frame period left
if trial_text.status == STARTED and t >= frameRemains:
trial_text.setAutoDraw(False)
# *trial_resp* updates
if t >= 0.0 and trial_resp.status == NOT_STARTED:
# keep track of start time/frame for later
trial_resp.tStart = t
trial_resp.frameNStart = frameN # exact frame index
trial_resp.status = STARTED
# keyboard checking is just starting
win.callOnFlip(trial_resp.clock.reset) # t=0 on next screen flip
event.clearEvents(eventType='keyboard')
if trial_resp.status == STARTED:
theseKeys = event.getKeys(keyList=['f', 'j'])
# check for quit:
if "escape" in theseKeys:
endExpNow = True
if len(theseKeys) > 0: # at least one key was pressed
trial_resp.keys = theseKeys[-1] # just the last key pressed
trial_resp.rt = trial_resp.clock.getTime()
# was this 'correct'?
if (trial_resp.keys == str(corrAns)) or (trial_resp.keys == corrAns):
trial_resp.corr = 1
else:
trial_resp.corr = 0
# a response ends the routine
continueRoutine = False
# check if all components have finished
if not continueRoutine: # a component has requested a forced-end of Routine
break
continueRoutine = False # will revert to True if at least one component still running
for thisComponent in TRIALComponents:
if hasattr(thisComponent, "status") and thisComponent.status != FINISHED:
continueRoutine = True
break # at least one component has not yet finished
# check for quit (the Esc key)
if endExpNow or event.getKeys(keyList=["escape"]):
core.quit()
# refresh the screen
if continueRoutine: # don't flip if this routine is over or we'll get a blank screen
win.flip()
# -------Ending Routine "TRIAL"-------
for thisComponent in TRIALComponents:
if hasattr(thisComponent, "setAutoDraw"):
thisComponent.setAutoDraw(False)
# check responses
if trial_resp.keys in ['', [], None]: # No response was made
trial_resp.keys=None
# was no response the correct answer?!
if str(corrAns).lower() == 'none':
trial_resp.corr = 1 # correct non-response
else:
trial_resp.corr = 0 # failed to respond (incorrectly)
# store data for trials (TrialHandler)
trials.addData('trial_resp.keys',trial_resp.keys)
trials.addData('trial_resp.corr', trial_resp.corr)
if trial_resp.keys != None: # we had a response
trials.addData('trial_resp.rt', trial_resp.rt)
# the Routine "TRIAL" was not non-slip safe, so reset the non-slip timer
routineTimer.reset()
My idea was to extract the codes of the trigger column of the lists at the beginning of the TRIAL routine, and then eventually refer to it, but I wouldn’t know how to do that. Hope I was clear.
Thank you in advance!
