Fig. 2. In the ventral striatum, reversal learning was modulated via D1R in the NAcC and D2R in the NAcS during early stages of reversal learning.

a, d Injector tip placements. Closed circles represent rats that received both raclopride and SCH23390; open circles represent rats that received only raclopride. b, e Errors to criterion by phase—early, mid and late—after the D2R antagonist, raclopride, in the NAcC and NAcS, respectively. c, f Errors to criterion by phase—early, mid and late—after the D1R antagonist, SCH23390, in the NAcC and NAcS, respectively. Errors until reaching criterion of a high performance (>24/30 correct responses) are collapsed over reversals. Data shown as mean ± SEM. *p < 0.05. ***p < 0.001.