lh.curv and rh.curv are made by mris_make_surfaces normally. You might as well use caret to remake the curvature files:
caret_command -surface-curvature and then use mean curvature. You will want to make sure that the thickness matches your volumes, because it is used as a part of the mapping. If you have 1mm volumes in Caret, then it is fine. If you have 0.25mm volumes, you should divide the thickness by 4. Peace, Matt. _____ From: caret-users-boun...@brainvis.wustl.edu [mailto:caret-users-boun...@brainvis.wustl.edu] On Behalf Of Colin Reveley Sent: Sunday, July 01, 2012 4:13 PM To: caret-users@brainvis.wustl.edu Subject: [caret-users] myelin mapping Hi - I had a data accident a while ago. I lost a freesurfer dir. But, since I was importing to caret I have lh and rh white and pial from freesurfer, and I have the thickness files for each. And I have the appropriate MRIs. These files took a LONG time to get right, and then it took quite a while to register them to F99 in a way I found acceptable. So I'm not sure about doing it again, for this animal anyway. I can get a ribbon volume using mri_ribbon. It's one file for each hemisphere. I presume I can just merge them, and call it ribbon,mgz what I'm missinng, for myelin mapping, are the rh.curv and lh.curv. there are two programs: mris_curvature mris_curvature_stats the former outputs a mean and gaussian curvature file (I think these files are an intermediate in making "rh.curv"; mris_make_surfaces does generate them I think anyway) then the other program makes this stuff rh.smoothwm.K.crv rh.smoothwm.H.crv rh.smoothwm.k1.crv rh.smoothwm.k2.crv rh.smoothwm.S.crv rh.smoothwm.C.crv rh.smoothwm.BE.crv can I make the curv file that you want for myelin mapping from any of the above files? maybe just renaming the mean curvature file or gaussian curvature file to "rh.curv" would be fine? Also, my voxels are 1mm in freesurfer, but 0.25 in reality. is that going to be a problem for this (curvature, thickness)? Probably not. but making sure. cheers, Colin
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