Divergence between Migraine and Controls.

<p>(a) The Henze-Penrose divergence between the healthy data and the migraine data showing that a classifier consisting of 15 interregional cortical thickness correlations separates subject cohorts at over 0.9. Values range from 0.5, meaning that subject groups cannot be separated, to 1, meaning that subject groups are completely separable. The regions comprising each feature (x-axis) can be found in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0116687#pone.0116687.g003" target="_blank">Fig. 3</a>. (b) A two-dimensional PCA embedding of data from the two groups illustrating the separability of migraineurs and controls.