Cortical thickness |
The closest distance between the white and pial surfaces at each vertex on the cortical surface |
Reflects dendritic arborization (Huttenlocher, 1990) |
Surface area |
The average area of the triangles that touch the vertex on the pial surface |
Linked to the number of minicolumns in the cortical layer (Rakic, 1988) |
GM volume |
The sum of the volumes of the individual triangles that lie within the neighborhood of the vertex |
A product of the thickness and surface area |
Sulcal depth |
The displacement from each vertex to the sulcal surface |
The degree of cortical folding |
Metric distortion |
The degree of displacement and convolution of the cortical surface relative to the average template |
The degree of cortical folding |
Mean curvature |
1/r (r is the radius of an inscribed circle) |
Reflects folding of the small secondary and tertiary folds in the surface |