Hmmm...I actually tried the -stim_nptr option first. Since I have one image every 1.5 TR, I used the following set-up:
-stim_nptr 1.5
Based on the warning I received, I got the impression that the stim_nptr option only recognizes integers. I'm sorry to keep bothering you, but am I doing something stupid here?
Jatin
Gang Chen wrote:
> Jatin,
>
> Yes, your script looks good if you want to model the hrf with a
> fixed shape (gamma variate) everywhere in the brain. Otherwise
> if you want some flexibility of hrf modeling across brain, use
> the other solution with -stim_nptr.
>
> Gang