Nonacclimated, drug-naïve mice were placed in Behavior Pattern Monitor (BPM) chambers immediately after administration of saline vehicle or 0.3, 1.0, or 3.0 mg/kg of PRA. Locomotor and exploratory behavior was measured for 90 minutes, divided into 10 minute time blocks. (a) Dose response of PRA effects on distance traveled (in cm). Mice used were male C57BL/6J. (b) Dose response of PRA effects on number of hole pokes. (c) Dose response of PRA effects on number of rears. Data are mean ± SEM. *p < 0.01, #p < 0.05. (n = 9 mice per dose group)