Hi FreeSurfer experts,

My question is about the curvature overlay. When we load the curvature files and select binary from the curvature drop down menu in Freeview or change the curvature display to binary gray in tksurfer, what do the the light gray and dark gray mean? I understand the light represents the gyrus and the dark represents the sulcus, but what happens at the light gray and dark gray border? Is that the point where the curvature value is zero?

Thanks,

Wesley Burge
Behavioral Neuroscience

Graduate Research Assistant

UAB Dept of Psychology

1720 2^nd Avenue South

Birmingham, AL 35294