Figure 6

Best dimorphic traits of the human cranium in the form space. Principal component analysis (PCA) of the most prominent dimorphic region identified in the form space (A). In the plot, female and male individuals are represented in light blue and yellow, respectively. The form variations (B) are computed at the extremes of PC1 and PC2. These form variations are compared to the mean shape: cold and warm colors indicate local contraction and expansion, respectively.