The Automatic Surface Labeling Process; GCA Atlases
This document provides an overview of two related topics:
How the FreeSurfer pipeline automatically labels a subject's regions (producing an annotation file) by comparing the subject's curvature data to an "atlas" ("gcs") file.
The process of creating one's own atlas file, perhaps to define regions different from the ones mapped in the atlases supplied with FreeSurfer.
The Labeling Process