Hi Ryan
>1. When using pickatlas 2.0 for ROI analysis, I am interested in brodmann
>area 39 and the angular gyrus. however, after I choose FWE @ 0.05 I get
>an error message. I don't have any problems with any ROI so far.
>
>
This looks like a pickatlas related pblm .. I don't know - note hovewer
that when using the pickatlas, because you are working on ROI a SVC is
performed to account for the multiple comparison prblm (so no need to
use the FWE)
>2. Is there an easy way to do an ROI on the frontal lobe minus brodmann 9,
>44, 45, 46, 47?
>
>
image of frontal lobe - (ba9 -ba44 ...) with image calc ?? sounds
feasible (take the image from the toolbox)
>3. How do you measure % signal change for a ROI? (please walk me through
>it step by step)
>
>
% signal change can be obtained by dividing the beta values in your ROI
by betas of the cste regressors (then * 100)
I think Marsbar and Volume toolbox also compute that for u
Good luck
Cyril
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