Fig. 3. Effects of posttraining administration of midazolam or pentobarbital on retention of an inhibitory avoidance response. Step-through latencies (mean ± SD) on a 48-h retention test. Immediate posttraining administration of midazolam (A ) or pentobarbital (B ) did not enhance memory consolidation (n = 9, 30 mg/kg midazolam and 70 or 80 mg/kg pentobarbital; n = 10 vehicle, 50 or 70 mg/kg midazolam and 60 mg/kg pentobarbital).