To see cortical thickness I used "File"--> "Load Curvature" (rh.thick), as you have suggested. In this way, I see the cortical thickness' value near the "curvature" indication, voxel-by-voxel. It's ok? And, when I write the command line in tkmedit: "tkmedit SUBJECT_ID brainmask.mgz -surfs", I see the brainmask image and two colored line, a red one and a yellow one. The first one is th edge of cortical surface; the other one is the white and grey matter's edge. Between these 2 lines, the software calculates the cortical thickness. Is this ok?Have I understood well? Thanks.