Hi Wanlin,
the spherical coordinates of the vertices in the ?h.sphere.reg should be approximately the same for homologous points across subjects. You can use drawn an ROI on one then use mri_label2label to map it to the others for example, or just to see what the alignment is you can use tksurfer->tools->send to subject, which finds the closest point on a 2nd subject to the last clicked point on the first. Then hit "goto saved point" in a second tksurfer and it will show you the corresponding point.
cheers, Bruce
On Fri, 11 Aug 2006, wanlin wrote:
Hello all: After processing cortex reconstruction using Freesurfer, i find that the number of vertices of ?h.sphere.reg for different people is different, How to make sure the point correspondence? the tutorial said that the ?h.sphere.reg file is the results of alignment between subjects and the standard template. If I want to perform hypothesis test for some features on every vertex, How should i do?
thanks
wanlin
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer