Fig. 2.

Post hoc three-group A) re-substitution and B) leave-one-out discriminant analyses using mean residual fractional anisotropy (FA) values within the left red nucleus (RN), right subthalamic nucleus (STN), and left caudate following removal of the effects of age, sex, and MR scanner through regression. Correctly classified healthy controls (HC), blepharospasm (BSP) patients, and cervical dystonia (CD) patients are contained with their colored distribution clouds while misclassified participants lie outside their respective distribution clouds. Post hoc two-dimensional C) re-substitution and D) leave-one-out discriminant analyses using mean residual FA values within the left RN and left caudate correctly classified all of the BSP patients and 15 of the 18 CD patients.