Dear all, I am trying to find vertices corresponding to (or as near as possible) a given set of MNI coordinates. I use freesurfer_read_surf and freesurfer_surf2tal to get the MNI coordinates of the vertices - however, place of the origin (0,0,0) in the brain seems to vary between subjects - especially the origin of our subjects is different from that of the given set, which of course makes it terribly difficult to find corresponding vertices.
So, I would like to know if there is a anatomically fixed origin for the MNI coordinates given by freesurfer_surf2tal and where it is. Of course I would also be happy for any other pieces of advice to get through this problem. The Freesurfer analysis for our subjects is done during a relatively long period of time (between 2007 and 2010) so one possible reason for the subject-to-subject differences might also be a change of e.g. MNI template used by the Freesurfer - has there been any changes of that kind? Many thanks already in advance! Best regards, Onerva Korhonen _______________________________________________ Freesurfer mailing list [email protected] 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.
