Hi - please see the FEAT manual. The filter works such that signals
of period longer than the cutoff set in the GUI are flitered out, the
longer the period the more strongly they are removed.
Cheers.
On 14 Jul 2007, at 05:38, Gonzalo Rojas wrote:
> Hi:
>
> I don't understand very well which value must I put in the "High
> Pass filter cutoff" option (FEAT "Data" tab)... If I have a block
> type fMRI with on-off cycles of 15 seconds, I must enter "30" in
> the "High pass filter cutoff" option ?... Why ?...
>
> Sincerely,
>
>
> Gonzalo Rojas Costa
> Laboratory of Medical Image Processing
> Department of Neuroradiology
> Institute of Neurosurgery Dr. Asenjo
> Jose Manuel Infante 553, Providencia, Santiago, Chile.
> Tel/Fax: 56-2-2003290
> Cel: 56-9-7771785
> www.neurorradiologia.cl
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Stephen M. Smith, Professor of Biomedical Engineering
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