By default the white matter, but you can compute the pail area if you want Cheers Bruce
On Aug 13, 2017, at 8:21 PM, Zhiliang Long 15756307968@163.com wrote:
Hi Bruce Thanks very much for your suggestion. Just one more question that I am confused with. Is the surface area calculated based on the white matter surface or pial surface ? Thanks for your time.
Best Zhiliang
At 2017-08-13 22:47:07, "Bruce Fischl" fischl@nmr.mgh.harvard.edu wrote:
Hi Zhiliang
the thickness is the average of the min distance from gray-to-white and white-to-gray at each vertex. The surface area is the average area of the triangles attached to a vertex (divided by 3 I think).
cheers Bruce
On Sun, 13 Aug 2017, Zhiliang Long wrote:
Dear FS experts: I am writting to ask for help about the computation of global mean thickness. On the FAQ page, one suggestion is that the global mean thickness is equal to the (lh.thickness*lh.surfarea + rh.thickness.rh.surfarea) / (lh.surfarea+rh.surfarea). I am wondering how the ?h.thickness and ?h.surfarea are calculated. Any suggestions are appreciated. Thanks for your time.
Best Zhiliang Long
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