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Experiment 1. (P30, P40) Morris water maze, acquisition phase, platform trials. (a) Angle of first bearing to the platform site measured in the first 13 cm at the start of each trial averaged across 4 trials/day for 5 days for male and female rats. (b) Time in the periphery of the maze (outer annulus) on platform trials averaged as in (a). Data are means ± SEM. Rats received 5 mg/kg methamphetamine (MA) four times per day on P11–20. **P<0.01.
