hello freesurfer experts,

attached is an image drawn from the tutorial page.
http://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/WhiteMatterEdits
i have circled 3 examples of what i am asking about

sometimes the gray matter surface (the red line) appears to include an area of membrane or something else that isn't brain.  will this adversely affect the any of the measures in the region? what, if anything, should be done about it?

thank you,
-eric cunningham