Hi Yuko, this has been asked about several times, so I just prepared as wiki page for it:

https://surfer.nmr.mgh.harvard.edu/fswiki/FsFastParametricModulation

Take a look and let me know if you have any questions.

doug

Yuko Yotsumoto wrote:

Hi,

I am wondering whether it is possible to use "parametric modulator (SPM term)" in FS-FAST.

For example, say I have 4 experimental conditions. These conditions are not independent. Conditions 1-4 are determined post-hoc by subjects responses - for example, attractiveness judgements. Condition 1 for least attractive, condition 4 for most attractive.. and so on. Instead of making contrasts for each condition, I'd like to find areas that show linear relationships (= % signal changes) with the regressors (=attractiveness judgements). I heard there is a way to do this with SPM, but I'd like to do this with FS-FAST.

I found this post in the archive, but I need some more info. http://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg14181.html

Thanks! Yuko Yotsumoto

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Yuko Yotsumoto, Ph. D. Associate Professor The Global Centers of Excellence Program, Keio University

TEL:011-81-3-5427-1156 x 23851 e-mail: yukoyy@a7.keio.jp HP : http://web.keio.jp/~yukoyy/

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