Figure 5.

(Top left: male outer, top right: female outer, bottom left: male inner, bottom right: female inner): shape change from 20 (blue) to 100 (red) years of age. Shape changes are unitless and may be scaled to represent a certain CS. Regions with blue landmarks are considered to be regions of relative compression with age (i.e. frontal region). Landmark regions with red landmarks are considered to be regions of relative expansion with age (i.e. temporal regions). L,  left; R,  right; A,  anterior; P,  posterior.