(A) Illustrations of the anatomical brain lesion locations in monkeys, where the excitotoxic MDmc and OFC lesion locations are illustrated on standard coronal sections from a monkey brain atlas (Laboratory of Neuropsychology, National Institute of Mental Health). Prior studies show the actual lesion locations of the MDmc and OFC in individual monkeys.13,22
(B) Differences in win-switch behavior (left) and lose-stay behavior (right) for the lesion groups between pre-reversal and post-reversal phases. Top right: PRL behaviors over time (moving average across 20 lagged trials) of win-switch (left) and lose-stay (right) choices across lesion groups, with a reversal occurring after 150 trials.
Each data point overlaid indicates an individual monkey’s data. Asterisks indicate significant effects of lesion group within each reversal phase (***p < 0.001, *p < 0.05; GLMM). Other symbols indicate significant effects of reversal phase within each lesion group (a, p < 0.001; +, p < 0.10).