Hi all,

I am a Freesurfer beginner and trying to do cortical surface analysis.
I wanted to have whitematter, gray volume and avg.thickness for each hemisphere. So when I run
mris_anatomical_stats -t thickness <subject> lh

I get the following data:

total white matter volume               = 729800 mm^3
total surface area                      = 90850 mm^2
total gray matter volume                = 181205 mm^3
average cortical thickness              = 1.971 mm +- 0.739 mm
average integrated rectified mean curvature     = 0.129
average integrated rectified Gaussian curvature = 0.039
folding index                           = 1574.464
intrinsic curvature index               = 204.376

Please correct me if I have this wrong.

> total whitematter volume ---> is of the total brain
> total surface area      ---------> what does it represent ?
I am bit confused here.

Thanks,
Deepa Ramasamy.