Hi

My name is Halil Ibrahim akçay. I am a neurologist. 

I have been used FreeSurfer for a while. And I cannot understand some part of troubleshooting process. I am sending a screenshot of my question. How can I understand whether gray zone as marked blue circle is a problem or not in this picture? And Should I fill this zone to fix the problem, if this is a problem?

Thanx for your helping.

I am looking forward to your answer.

Best regards