Figure 4.

(A) Learning curves across trials 1–8 for new scene learning in pre- and post-operative performance tests in control monkeys and monkeys with bilateral ventrolateral prefrontal ablation. Monkeys with ventrolateral prefrontal lesions show slower learning post-operatively. (B) Individual performance on object-in-place scene learning for each monkey (CON1–CON4, controls; VL1–VL5, monkeys with bilateral ablations of ventrolateral prefrontal cortex). The measure plotted is mean performance (percentage error) across trials 2–8 of lists of new scenes learned pre- and post-operatively. The monkeys with ventrolateral lesions are mildly impaired in scene learning post-operatively.