CDPPB does not influence conditioned taste aversion but attenuates MK-801-induced disruption in classical conditioning. (A) Vehicle (0), 3 or 10 mg/kg CDPPB was injected s.c. 20 minutes before saccharin intake during conditioned taste aversion conditioning. Testing was performed for three successive days, once per day, beginning 2 days after conditioning. (B) PBS/Vehicle (0/0), 0.2 mg/kg MK-801/Vehicle (0.2/0), 0.2 mg/kg MK-801/3 mg/kg CDPPB (0.2/3) or 0.2 mg/kg MK-801/10 mg/kg CDPPB (0.2/10) were injected s.c/i.p. simultaneously 20 minutes before saccharin intake during conditioned taste aversion conditioning. Testing was performed 48 hours later. Results are expressed as mean ± SEM (n=7-14). *p<0.05 vs. 0.2 mg/kg MK-801/Vehicle group (One-way ANOVA, Bonferroni’s posttest).