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Dear Freesurfer experts, 
 
I use Freesurfer 6 on macOS Sierra 10.12.6. I noticed a potential error in some of my participants. In fact, there seems to have an error in the segmentation of gray matter. You will find attached pictures of the segmentation. I am wondering if it is an error and if anyone has any idea to fix it. I think it affects the surfaces.

 
Thank you,
Maxime Perron