Figure 2.

Effect of pharmacological inactivation (CNQX/AP5, 1 and 2 μg/0.5 μl, respectively) of the NAc core and shell on the DS task. A, Average DS (left) and NS (right) response ratios (proportion of DSs or NSs during which the animal pressed the lever). B, Average DS (left) and NS (right) response latencies (time from cue onset to the lever press). C, Average number of rewarded (i.e., occurring during DS presentations, left) and unrewarded (outside DS presentations, middle) lever presses on the active and total number of lever presses on the inactive lever (right). D, Average number of reward receptacle entries. ⁺p < 0.05, ⁺⁺p < 0.01, ⁺⁺⁺p < 0.001 compared to CSF injections and ^#p < 0.05, ^###p < 0.001 compared to shell injections.