Dear FreeSurfer experts, 

we did a FreeSurfer-Analysis of cortical thickness in schizophrenia patients with motor abnormalities and found significant changes of cortical thickness in many brain regions. The Qdec p-maps showed many regions with surface size exceeding 100mm2. We used a 15mm FWHM smoothing.
 
Does anabody have an idea if there is a reasonable neurobiological/ontological basis/explanation for this finding?
 
What is the exact size of M1 and SMA in mm2?
 
 
Thank you for your time!
 
 
Dusan