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 > > > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
