Figure 3.

Withdrawal from systemic morphine is dependent on dopaminergic signaling in the shell of the nucleus accumbens. (a) Timeline of test day for Experiment 3. (b) Startle potentiation was attenuated by apomorphine infusion into the NAc shell (^*p<0.05 compared to 0 and 1 μg groups). (c) Startle potentiation was not reduced by apomorphine infusion into the dorsolateral component of the bed nucleus of the stria terminal (dlBNST). (d) Startle potentiation was not reduced by apomorphine infusion into the central amygdala (CeA). (e) Startle potentiation was not reduced by apomorphine infusion into the ventral tegmental area (VTA).