the fsaverage subject is in Talairach space (actually, mni305 space), so using the /transforms/talairach.xfm file in your subjects/mri dir will be the proper transform to use for transform to fsaverage space.

n.

On Thu, 2010-02-11 at 17:42 -0500, Mishkin Derakhshan wrote:

Hi, I am looking for the transformation matrix that takes my input volume (orig.mgh) and maps it into the same space as fsaverage (or the inverse of this transformation if it already exists). I've already run recon-all -all, and -qcache, so I'm pretty sure this information exists somewhere, but after searching through the data, the wiki and the mailing list, I'm embarrassed to say that I still can't find it. If this information hasn't been stored, I imagine mri_surf2surf can calculate it for me. Would this be the best way? thanks, mishkin _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer