If you are going to assume a shape to the hemodynamic response, then I
don't think it makes much difference. It will make a difference if you
are going to use an FIR.

On 9/9/19 10:49 AM, Nasiriavanaki, Zahra wrote:
> Hi Freesurfer experts
>
> I have a question about designing an event related task. We are
> designing a task for fear conditioning. Each stimuli presentation
> lasts 4 seconds. My question is if we set the TR to 2 (which is a
> multiply of 4), will it make the paradigm to have more power in signal
> detection? Or does it not matter if the TR and stimuli presentation be
> a multiply of each other or not?
> I appreciate if you give me your comments on that.
>
> Thanks a lot
> Mona
>
> *Zahra (Mona) Nasiriavanaki*
>
> Postdoctoral Research Fellow
>
> Martinos Center for Biomedical Imaging
>
> Massachusetts General Hospital
>
> 149 13th Street, 149-2615
>
> Charlestown, MA, USA, 02129
>
>
>
>
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