Protocol of infusions during inhibitory avoidance training (A) and during conditioned taste aversion acquisition (C); arrows indicate the moment when the drugs were infused. (B) Time latency during the IA test for control received saline infusions (CON; n = 16), 0.25 μg of 8-Br-cAMP (cAMP .25; n = 10), 1.25 μg of 8-Br-cAMP (cAMP 1.25; n = 13), .06 μg of oxotremorine (OXO .06; n = 6), and 0.3μg of oxotremorine (OXO .3; n = 9) groups. *P < 0.05 and **P < 0.001, from control; °P < 0.01 from OXO .06. The shaded box inside CON and NO FOOTSHOCK groups indicates the entrance latency during the training day (mean of CON group = 12.38; paired t-test training versus test latency in CON, t value = -2.39; P < 0.05, NO FOOTSHOCK groups showed any significant differences). (D) Consumption of saccharin during CTA test day for IP injection of a high dose of LiCl (CTA-CON, n = 9), IP injection of a low dose of LiCl-control group (LL-CON, n = 7), 1.25 μg 8-Br-cAMP (cAMP 1.25, n = 5), and 0.3 μg oxotremorine (OXO .3, n = 5). *P < 0.01 from CTA-CON.