a MAM rats treated with VEH i.p. spent less time interacting with a novel object compared to a familiar object as measured by a discrimination index ((novel-familiar)/(novel + familiar)) compared to SAL rats. MAM rats treated with 3 mg/kg, i.p. POM spent more time investigating the novel object compared to VEH treated MAM rats. There was no effect of POM on discrimination index in SAL rats. b POM reduced locomotor activity, measured by total time exploring objects in the test phase, which was significantly reduced in SAL rats treated with 3 mg/kg POM, i.p., compared to VEH-treated SAL rats. *p < 0.05, **p < 0.01, ***p < 0.001 within groups #p < 0.05, ##p < 0.01, ###p < 0.001 between groups.