Hi Doug,
I'd like the average over the ribbon, so I changed "pial" to "white". I'd think this actually results in a projection of the white surface, but I guess this actually doesn't matter since each white vertex is associated to a directly overlying pial vertex?
Best regards,
René
On Tue, May 14, 2013 at 5:48 PM, Douglas N Greve greve@nmr.mgh.harvard.eduwrote:
Hi Rene, do you want it on the pial surface or the average over the ribbon? If the pial surface, then use your cmd below but use --projfrac 0. If you want the average use your cmd below but change pial to white (or don't spec --surf) doug
On 05/14/2013 08:00 AM, René Besseling wrote:
Hi Freesurfers, For this analysis I plan to do, I want to map resting-state data in native (T1) space to the pial surface. The command I use for this is: mri_vol2surf --src fMRI_nat.nii --regheader subjID --hemi lh --projfrac-avg 0 1 0.05 --surf pial --o fMRI_2surf.mgh So the intention is to average the resting state data over the cortex and to map this to the pial surface. However, if I'm not mistaken the --projfrac-avg option projects along the outward pointing surface normal. Therefore, when using the pial surface, I expected that the proper call would be --projfrac-avg 0 -1 -0.05. However, this command does not run, whereas the command given above does, and yields (sensible) output. So is the command given above correct after all? And does this imply that for the pial surface, the volumetric data is actually projected along the inward pointing normals? Best regards,
René
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 greve@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.