In the trial element I have currently specified what order the trial should look like, like this:
/ stimulustimes = [0=clearscreen, fixation; 500=clearscreen, Positive_Images, Negative_Images; 1000=clearscreen, probe]
/ validresponse = ("Z", "/")
/ correctresponse = (Positive_Images)
What issue I am currently facing is that whilst in /stimulustimes it is specified that the trial should show a probe in the end, it is currently not specified in the <text probe> element where that probe should appear coordinates-wise and what the distrubution of its location (showing up on the location of positive/negative stimuli) should be. Currently, it looks like this:
/ items - ("X")
/ txcolor = white
/ fontstyle = ("Arial", parameters.probe_height, false, false, false, false, 5, 1)
/ erase = false
/ vjustify = center
What I am currently aiming for is that the probe is distributed to the ratio I have outlined in my first post, that is:
- A control condition where the appearance of the probe is presented at random on the location of one of the stimuli
- An experimental condition where the probe is presented at the positive stimuli location 80 percent of the time.
My main question is what the code would look like/what would have to be added in the <text probe> element to ensure those 2 conditions. I hope that's clear enough.