You simply want to create a contrast of each run, then use that
contrast at the second-level in a repeated-measures design. This will
allow you to test if the contrast conditionA-conditionB changes over
time.
Best Regards, Donald McLaren
=================
D.G. McLaren, Ph.D.
Research Fellow, Department of Neurology, Massachusetts General Hospital and
Harvard Medical School
Postdoctoral Research Fellow, GRECC, Bedford VA
Website: http://www.martinos.org/~mclaren
Office: (773) 406-2464
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On Wed, Oct 17, 2012 at 11:31 AM, Claire (Jung Eun) Han
<[log in to unmask]> wrote:
> Dear experts,
>
> I have a question regarding fMRI data analysis.
>
> I have seven runs (about 7mins each) in one fMRI session.
> I would like to see if brain responses for (Condition A - Condition B)
> change across the 7 runs (e.g., do the brain responses for A-B become
> stronger over time, do different brain areas activate over time).
>
> Could I use the FIR to do this? Is there any other function in SPM I could
> use to answer my question (detailed explanation would be very much
> appreciated!)?
>
>
> Thanks for your help!,
> Claire
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