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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