Hi Mahinda
1. The subvoxel accuracy has been verified experimentally in Dianas Rosas'
paper:
http://www.ncbi.nlm.nih.gov/pubmed/11889230
where she measured the thickness under a microscope (ex vivo) and compared
it to our results and found they agreed within a couple of hundred microns.
Dear Freesurfer team,
I have a manuscript under review which has used Freesurfer to compare
cortical thickness differences between groups, controls and patients with a
specific genetic mutation. There are robust, statistically
significant group differences in biologically plausible regions.