First of all, I would like to wish you a happy new year!
I have a strange problem with SuperLab…
I have programmed a Posner-like experiment :
1/ fixation cross between two rectangles (so 3 events - rectangle left/rectangle right and fixation cross in the center - presented in the same time), for 1000 ms
2/ a cue (photo) appears in lieu of one of the rectangle (or not at all) (again 3 events in the same time), even for 17 ms or 500 ms
3/ a mask hides the photo (same screen as the fixation cross one - again 3 events in the same time), even for 17 ms or 50 ms
4/ a target (a point) appears in one of the rectangle and have to be detected asap by the participant (again 3 events in the same time), maximum 2000 ms
The problem is : there are systematic long blanks (for about 2-3 seconds) between the cue and the target, and the mask does not appear at all.
I really don’t know what is the problem - I have tried several things but it’s always the same problem… It’s very problematic because the timing of the task is very important in this experiment.
Does anyone have an idea of what could be the problem here?
Thank you in advance