Hi Doug and Freesurfer Experts, I am trying to see whether cortical thinning gets progressively less severe as we move further away from a seed/voxel (e.g. precuneus). Is it possible to perform correlations between the (a) distance between a given vertex to specific point on fsaverage, and the (b) measurement (i.e. thickness) of the vertex?
Say I have a binary mask of the precuneus seed, as well as a second binary mask that surrounds it. How may I go about getting the thickness values at various distances, starting from the central core of the precuneus seed to the outer boundary of the second mask? I was thinking of something analogous to the proj-frac function in mri_vol2surf where we could sample PET/fMRI data at different values along the cortical ribbon. Apologies if that was rather confusing. If you like, I could make a drawing of what I am trying to do. Thanks for your time. Best Wishes, Elijah
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