Fig. 2.

Registration of the left hemisphere of two different subjects from Group 1 to the target brain. Curvature overlap between the subject and the target is color coded. The enlarged area indicates misregistration of the central sulcus, which happened once with FreeSurfer: (1) the subject’s central sulcus (thin red line) was mapped to the precentral gyrus of the target (white area); (2) the subject’s postcentral sulcus was mapped to the central sulcus of the target (thick black line) resulting in a mismatch between the precentral and postcentral sulci.