Hello Kyle,
I know very little about this method, but the Volterra series
might provide the information you need about the different hrfs
you might expect to see.
Yours,
Jon.
_____________________________________________________
Jonathan Brooks Ph.D. (Research Fellow)
Magnetic Resonance and Image Analysis Research Centre
University of Liverpool, Pembroke Place, L69 3BX, UK
tel: +44 151 794 5629 fax: +44 151 794 5635
On Mon, 9 Sep 2002, Kyle E. Knierim wrote:
>I was wondering if SPM has a tool that estimates the HRF for fMRI data
>sets. We have two models. The first set is modeled as a block design
>with two conditions (stimulus and baseline). The second set is modeled
>as variable duration events, again with stimulus and baseline being the
>two conditions.
>
>
>
>Any suggestions would be appreciated.
>
>
>
>Thanks
>
>
>
>Kyle
>
>
>
>Kyle Knierim
>
>Department of Anesthesia, Division of Pain Management
>
>Stanford University Medical Center
>
>(650) 724-8783
>
>
>
>
|