i'm trying to program an experiment. basically the setup is as follows: 1) a scene shown for 500ms, 2) an ISI for 500 ms 3) another scene.
during the ISI a cue could appear at either 0, 50, 100, or 400ms into the 500ms ISI.
my problem is that i have created a stimulus with the cue. but im not sure how to have it appear randomly at each of these times during the 500ms ISI.
can anyone help?