Re: [Freesurfer] cotrolling for total gray matter volume

Hi Clara

I would use the stats from the long as they are most stable, and yes I believe you should control for total volume when looking at surface area.

cheers Bruce

On Thu, 30 Jun 2016, Clara Kühn wrote:

Dear FreeSurfer experts,

I would like to look at longitudinal thickness data and want to control for total gray matter volume. Should I use that information from the CROSS before anything has been registered and smoothed or from the LONG after they have been registered to the BASE? Also I was wondering if it is useful to control for total gray matter volume when looking at surface area?

Thanks for your help! Clara