How is the volume of each cortical structure (and hemisphere) calculated? It seems I remember from somewhere that it is the thickness x average surface area of the tesselated triangles? Is this right? What I'm most interested in is how the cortical gray matter volume from mris_anatomical_stats is calculated. Is it the average thickness of the whole hemisphere x surface area, or is by adding up the volumes of all the parcellated structures from the atlas? I remember reading about it earlier, but couldn't find any info in the list archive or on the wiki. Thanks.
-Derin