a Placements of cannula for vHPC infusion for □ MAM-VEH, ■ MAM-POM, ○ SAL-VEH, ● SAL-POM. b Infusion of POM in the vHPC was sufficient to reduce DA neuron population activity in MAM rats, but did not impact SAL rats. c, d No effect of intra-vHPC POM infusion on firing rate or the percentage of spikes in bursts was observed. *p < 0.05, **p < 0.01, ***p < 0.001 within groups #p < 0.05, ##p < 0.01, ###p < 0.001 between groups.