did you see Doug's earlier response to this question?
On Fri, 30 Sep 2016,
Ali-Reza Mohammadi-Nejad wrote:
Dear Freesurfer experts
Based on the FS wiki, I calculated the cortical thickness difference between
the LH and RH of a subject in subject's native surface.
Now, I want to use FS command
Dear Freesurfer experts
Based on the FS wiki, I calculated the cortical thickness difference between
the LH and RH of a subject in subject's native surface.Now, I want to use FS
commands to extract the information such as "?h.aparc.stats" for this
difference map (LH - RH).Now this difference map