If you want to extract data that is already on the surface, you can use mri_segstats with the --annot option. If you want time courses as the output, use the --avgwf. Also, you'll probably want to add --exclude 0 to not report data from unknown regions.
On 3/16/18 7:23 AM, zuxfoucault Wong wrote:
Dear FreeSurfer experts:
When I registered the map of functional activation on each hemisphere, how can I extract mean activation value based on each parcellation region on the surface?
According to FreeSurfer tutorial https://surfer.nmr.mgh.harvard.edu/fswiki/MultiModalTutorialV6.0/IndividualF...
, the measures extracted by mri_segstats is the functional activation map resampled to the individual's anatomical space by mri_vol2vol. Can mri_segstats extract mean activation value based on each parcellation region in a surface-based way?
Thank you for your time!
Best, Foucault
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