Figure 6:

Depicts the mean (±S.E.M.) responses per session on the lever previously associated with the delivery of EtOH in Non–Deprived (ND) P rats that were exposed to CS+, CS⁰ and CS- in the non-drug paired environment then tested for PSR expression in the presence of CS+ (Fig. 6A) or CS- (Fig. 6B) in the drug-paired environment. Fig. 6A; Asterisk (*) indicates CS+ group was responding more than the CS⁰ and No Odor groups during PSR session 1 (p < 0.05). The CS⁰ and No Odor responded more than the CS- group during PSR session 1 (p < 0.05). Pound (#) indicates that during the 2^nd PSR test session responding in rats pretreated with the CS+ responded more than the No Odor group which responded more than the CS⁰ and CS- groups (p < 0.05). Dagger (†) indicates that during the 3^rd PSR test session, rats pretreated with the CS+ responded more than all other groups (p < 0.05). Plus (+) indicates that rats lever responding was significantly greater than extinction baseline (Ext Base) (p <0.05) for CS+ during PSR sessions 1–3, CS⁰ during PSR session 1, and for No Odor group during PSR session 1–2 (p <0.05). Fig. 6B; Asterisk (*) indicates that CS+ responding was less than the CS⁰ and CS- during PSR session 1 (p < 0.05).