Hello, experts

One quick question of editing the white matter. I attached one figure after autorecon2. In the middle of right hemisphere, there is a one small enclosed area. I would like to fill that area using the brainmask as a guide, but there is nothing between the brainmask mgz and wm.mgz in that area; so I can’t paint in anything. Is this a minor defect to neglect or any other way to fix it.

Thanks a lot

Karl