Dear FreeSurfer users,

I have a question regarding the link between cortical thickness and gyrification index: suppose I have a general decrease of cortical thickness in a lobe of the brain. Is it correct to suppose that consiquentely the gyrification index will decrease in the sulci (because of the decreased curvature) and that it will increase in the gyri (because of the increased curvature)? So that probably I would not be able to measure any difference in the gyrification index of that lobe?

Thank you.

Best, elisa