Thanks for replying, Rick!

what i have for one subject here are:
a rest file and three task files: Rest.nii, Experiment_1.nii, Experiment_2.nii, Experiment_3.nii (three experiment designs, one run each experiment)
ten stimulus timing files: W_1.txt, M_1.txt, N_1.txt, Mistake_1.txt (in experiment 1); W_2.txt, M_2.txt, N_2.txt, Mistake_2.txt (in experiment 2); A.txt, Mistake_3.txt (in experiment 3)
subjects need to press button '2' with thumb of one hand when seeing W (or A), press '3' with the other hand when seeing M and press nothing when seeing N. Mistakes means the wrong responses. left and right hand were counterbalanced.
if what i want to do in gltsym are M2-M1 and M1-A, how should i set the -dset and -regress_stim_times

And second, in this set of ER fMRI experiments, the ISI randomly varied just from 1-3s, with stimuli randomly designed (4 kinds of stimulus in experiment 1, 4 in experiment 2 and 2 kinds in experiment 3). which kind of basic function should i choose.

thanks a lot!
looking forward to hearing back soon!

-Yuan



Edited 2 time(s). Last edit at 05/08/2018 06:08AM by RS Yuan.