[Freesurfer] Problems segmenting monkey brain

Hi,

I have a (0.35 mm)^3 resolution monkey brain which I am trying to segment. I am unable to get the frontal cortex to segment properly. My WM.mgz looks good ( I think), but after I do "recon-all -autorecon2-wm ", the surf that gets created has no frontal cortex. I have attached two pictures of one slice, with generated surface overlaid on WM.mgz ( WM_Surf133.jpg) and the same generated surface on T1 image (NU-Surf133.jpg). I tried adding control points, I manually edited the WM.mgz and nothing works. Any help will be appreciated..

regards, Krishna Srihasam Postdoctoral Fellow Livingstone Lab 220 Longwood Avenue, WAS 232 Boston, MA 02115