I think you can map it to fsaverage5 then use mri_surf2surf with -sval-xyz to map the fsaverage5 surface back to each subject On Fri, 4 Mar 2016, marmaduke woodman wrote:
> On 03/04/2016 10:06 PM, Bruce Fischl wrote: >> what are you trying to achieve? > > A per-subject ~10k vertex pial surface with a corresponding annot. We > use it as a spatial domain for simulating neural activity; 150k vertices > is too many for this purpose. > > > It might be easiest to use something like >> fsaverage5 as the downsampled surface. Then you would just map your >> subjects to fsaverage5 using the existing sphere.reg files > > If I understand correctly, different subjects would then have identical > cortical geometry, which isn't sufficient for our use case, as we are > calculating the forward solution for EEG/MEG which can depend on the > individual's cortical geometry. > > Sorry if I've misunderstood your suggestion, I'm still a freesurfer noob. > > > Thanks, > Marmaduke > > > > > _______________________________________________ > 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.
