I am trying to us the stimulus optimization script (how-to #3) for a rapid-event related experiment that involves stimulus repetition. We want to show 2 sets of 50 pictures twice ( a total of 200 pictures and 100 fixation). Repetition involves presenting the exact same picture.
Basically:
A = picture group 1
B = picture group 2
C = repetition of picture group 1
D = repetition of picture group 2
The difficulty is, of course, that "A" must occur before "C".
i.e. you can't have a series of:
A(1) A(2) C(1) C(2) C(3) A(3) .... (I ignored B and D for simplicity)
I thought I might use RSFgen make -num_stimts 100 each with -nreps 2; but upon reflection that is a whole lot of parameters to estimate in 3dDeconvolve.
Any ideas, it seems so easy.
