Cindy, the brains are not stretched in any way. All computations are
done in native anatomical space. The talairach reg is only there for
reporting purposes (or to create average subjects).
doug
Cindy Eckart wrote:
Dear freesurfers,
I am new in the list and will start with a hopefully not too stupid question...
besides a planned cortical thickness analysis I would like to compare the
volumes for some cortical parcellation areas between three groups. As far as I
understood the freesurfer-procedures the brains are also stretched during the
linear registration in the talairach transformation process. Is this stretching
scale factor already accounted for in the volume values displayed in the
aparc.statsvolume-file? Or will I have to account for potential deformations
due to stretching of the brain by myself? I think it must have been already
accounted for, but so far I found no specific notations in the corresponding
publications...
Thank you for your help and greetings from Germany
Cindy
____________________________________________________________________
Psssst! Schon vom neuen WEB.DE MultiMessenger gehört?
Der kann`s mit allen: http://www.produkte.web.de/messenger/?did=3123
_______________________________________________
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
