Fig. 3. Trials to learning criterion. The median values and the interquartile ranges for the number of trials each group of animals required to learn the inhibitory avoidance task. Propofol (25 mg/kg, intraperitoneal) 5 min before training clearly made task learning harder for both sham-operated controls (*P < 0.05) and animals with basolateral amygdala complex lesions. However, the effect was not statistically significant for the basolateral amygdala complex–lesioned animals (NS = not significant;P = 0.47). IQ = interquartile range.