So if I understand, you used mri_surf2surf to map the curv from your subject to fsaverage. You then viewed the original curv on the original subject and then you viewed the fsaveage-mapped curv on faverage and you find that they are very similar. Is that right? This would not surprise me much. If you still have questions, pictures would help alot
On 07/21/2016 10:50 AM, Trisanna Sprung-Much wrote:
Hi Doug
What I mean to say is that the pial surface created by recon-all and the pial surface that has been nonlinearly registered to fsaverage look pretty much identical in sulcal patterns, but I do not understand how this can be the case if one surface has been registered to a surface template based on cortical folding. Shouldn't the cortical folding for this registered surface change even a little bit?
best Trisanna
-- Ph.D. Candidate McGill University Integrated Program in Neuroscience Psychology
On Tue, Jul 19, 2016 at 10:29 PM, Douglas Greve <greve@nmr.mgh.harvard.edu mailto:greve@nmr.mgh.harvard.edu> wrote:
I don't understand what you did or what the problem is. Can you elaborate? On 7/19/16 5:23 PM, Trisanna Sprung-Much wrote:Hi there I tested registering a subject's pial surface to fsaverage and compared the original pial (from recon-all) with this registered pial surface. It turns out that they are almost identical in nature, and I am wondering how this is possible if recon-all does not alter the input data. Below is the command that I ran. Is there something I am missing here? many thanks Trisanna trisanna@kaplan:~$ mri_surf2surf --srcsubject icbm-102 --sval-xyz pial --trgsubject fsaverage --tval-xyz --tval lh.pial.icbm102 --hemi lh srcsubject = icbm-102 srcval = (null) srctype = trgsubject = fsaverage trgval = lh.pial.icbm102 trgtype = srcsurfreg = sphere.reg trgsurfreg = sphere.reg srchemi = lh trghemi = lh frame = 0 fwhm-in = 0 fwhm-out = 0 label-src = (null) label-trg = (null) OKToRevFaceOrder = 1 Reading source surface reg /data-01/trisanna/freesurfer/icbm-102/surf/lh.sphere.reg Loading source data Reading surface file /data-01/trisanna/freesurfer/icbm-102/surf/lh.pial Reading target surface reg /data-01/trisanna/freesurfer/fsaverage/surf/lh.sphere.reg Done Mapping Source Volume onto Source Subject Surface surf2surf_nnfr: building source hash (res=16). Surf2Surf: Forward Loop (163842) surf2surf_nnfr: building target hash (res=16). Surf2Surf: Reverse Loop (169941) Reverse Loop had 44416 hits Surf2Surf: Dividing by number of hits (163842) INFO: nSrcLost = 0 nTrg121 = 131435, nTrgMulti = 32407, MnTrgMultiHits = 2.37057 nSrc121 = 140014, nSrcLost = 0, nSrcMulti = 29927, MnSrcMultiHits = 2.28035 Saving target data -- Ph.D. Candidate McGill University Integrated Program in Neuroscience Psychology _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu <mailto:Freesurfer@nmr.mgh.harvard.edu> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer_______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu <mailto: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.
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