Hi Dirk,
I have no further input other than to point you to a program that helps
in the optimization of FIR models called optseq:
https://surfer.nmr.mgh.harvard.edu/fswiki/optseq2
https://surfer.nmr.mgh.harvard.edu/optseq/
Hopefully there is some material in there that will answer your
questions. We've been using it for determining the onset times in our
experiments, and ours end up jittered.
Hope this helps,
Pete
On Thu, 28 Feb 2008, Dirk den Ouden wrote:
> Dear all,
>
> We are having a discussion down here over whether the time bins of an FIR
> function should be aligned with the onset of TRs in SPM models. Would there
> be a problem with having (pseudo)randomly jittered onsets of 2 second TRs
> that are not temporally aligned with 2 second FIR time bins?
>
> thanks for any input!
> best, Dirk
>
> ************************************
>
> Dirk-Bart den Ouden, Ph.D.
>
>
>
> Aphasia & Neurolinguistics Research Laboratory
>
> Dept. of Communication Sciences & Disorders
>
> Northwestern University
>
> 2240 Campus Drive, Evanston IL 60208-3066
>
> Phone: (office) 1-847-467-2515; (lab) 1-847-467-7591
>
> ************************************
>
>
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