Yes, it is probably best to do it with those as those have the averages across the subjects used to create the atlas. If you just use the area of the cluster on the pial, it will be somewhat smaller.

doug

On 09/06/2012 01:53 PM, Ritobrato Datta wrote:

Hi Doug,

I need to dump the surface area of a patch in fsaverage_sym lh.

But I need to dump the value for fsaverage_sym pial surface, white surface and inflated surface.

I noticed that in the folder freesurfer/subjects/fsaverage_sym/surf/

there is

?h.white.avg.area.mgh

?h.pial.avg.area.mgh

What are these ?

Can I just apply my patch/mask/label on ?h.white.avg.area.mgh and ?h.pial.avg.area.mgh to get the corresponding scalars ?

Please let me know.

We are finishing up this paper and need these values as soon as possible.

Any help will be very much appreciated.

Thanks a lot

Rito