Hi Freesurfers,<br><br>I have functional activation files (.mgh) which I can overlay onto a subject's surface. Now I am trying to do a functional ROI analysis based on the annotation files, e.g. to get information about the mean activation in a specific area based on FS segmentations. <br><br>Does anybody have any suggestion on how to do this in a straightforward manner?<br><br>Thanks a lot.<br><br>Sandy<p>&#32;

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