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/IndividualFMRI 

, 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

_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer


The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Partners Compliance HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to you in error
but does not contain patient information, please contact the sender and properly
dispose of the e-mail.