I’m trying to put together an experiment for use outside and ultimately inside the MR scanner.
I’ve thrown something together with the builder, and to get things started inserted a loop, with the conditions being read in from a .xlsx file. This part is working as expected. Unfortunately, the randomisation options can’t handle the weird trial selection scheme that we’re using, so I started to put something together by hand in python.
I now need to shoehorn this code into my builder “skeleton”. The question I have is sort of generic, in that psychopy keeps track of the experiment using a trial handler, which reads in the .xlsx file and would normally contain the names of the images to be presented. However, I need to specify my own image files and randomisation, which I think is best done dynamically with python. Is there a way to fool the TrialHandler into thinking it has control, when in fact it doesn’t?
At the moment I have 160 trials defined by my own randomisation, and have generated a “spoof” .xlsx file with 160 entries, so that two match…but this doesn’t seem very elegant. I guess this is mostly down to my lack of familiarity with the TrialHandler…
One of the reasons why I want to keep experiment/trial handlers running is because I need to know RT - and which option was chosen…
Hope this makes sense, any advice/suggestions would be much appreciated.