[Freesurfer] group analysis with qdec

Dear all,

Hi, I am a new user of freesurfer, and have a questions on group analysis with qdec.

I compared average thickness between two groups (a control group and a patient group).

What I am trying to do next is to make a mask where the patient group showed reduction of cortical thickness (for example, p<0.05, FDR), then examine the correlation between clinical scales and cortical thickness in the masked regions, by doing group analysis in the regions (not entire brain).

I searched past archives, but couldn't find one. Does anyone know how to do this with qdec ?

Thanks for your help,

Kind regards

Manabu Kubota kubotajp@kuhp.kyoto-u.ac.jp Kyoto University