Figure 1.

Lesions of VLPFC in cases VL1-VL4. The intended lesion is shown in red on coronal sections of a normal rhesus monkey in the leftmost column, at 5 stereotaxic levels through the prefrontal cortex, moving from rostral to caudal from the top to the bottom of the figure. Photomicrographs of brain sections from cases VL1-VL4 at corresponding stereotaxic levels are shown in the other columns.