Experiment 2. (P180, P360) Morris water maze, reversal phase, platform trials, path length: (a) Path length (cm) averaged across 4 trials/day and across sexes for the P180 groups. (b) Same as in (a) except as applied to the P360 groups. (c) Same as in (a) except that data are the combined averages of the P180 and P360 groups, which are also averaged across days, to show the main effect of Group. Data are means ± SEM. Rats received 5 mg/kg methamphetamine (MA) four times a day on P11–20. *P<0.05 vs. saline.