Dear Mauro
You should use the one that fitsthe noise characteristics of your
scanner :-) If your scanner is stable enough to let you study e.g. 2
minutes of fingertapping vs. 2 minutes of rest without getting false
activation then you can use a 240s HP filter, with the scanners I have
seen so far this is not the case.
Best
Torben
P.S. You may want to have a look at my previous postings on this.
Den 12/06/2008 kl. 12.29 skrev PESENTI Mauro:
> LLN, le 12/06/08
>
> Dear SPMers,
>
> I'm aware that this is not a very efficient design, but I have an
> fMRI experiment in which, for methodological reasons, each condition
> can only be presented once. What high-pass filter should be used in
> this case since the usual rule of the thumb does not work?
>
> Thanks for any advice,
>
> Mauro Pesenti
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> Mauro PESENTI
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