One is a map-based/voxel-wise analysis, each voxel is treated separately. The aparc stats table is an average over all vertices in the ROI. If you have an effect that does goes across the ROI boundary, it could be lost in the ROI analysis. On the other hand, the ROI analysis may be more powerful because of the averaging across space and fewer issues with registration across subject
On 08/23/2016 04:59 PM, miracoo...@gmail.com wrote: > Hello freesurfer experts, > What's the difference between GLM surface based cortical thickness > analysis and the cortical thickness analysis performed when using > regions extracted from aparcstat table? > Best, > Paul > > Sent from my BlackBerry 10 smartphone. > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ _______________________________________________ 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.
