Fig. 4.

a Lesion overlaps. Top panel Patients whose performance differs from control—patients OL, BB, and FD—exhibit lesion overlap over the superior parts of the parietal cortex, labeled here as the “SPL group.” Middle panel Patients whose shifting index fell within two standard deviations of the mean of controls (patients RK and SW), labeled as the “2SD group.” Bottom panel Patients whose performance did not differ from that of controls—patients JM, MF, LB, and LD—exhibit lesion overlap over the inferior portions of the parietal cortex, labeled here as the “TPJ group.” b Reaction times as a function of target type (shift or hold) and side of occurrence for the SPL, TPJ, and control groups