Figure 3.
Effect of prazosin pretreatment (1 mg/kg) on (A.) 2 mg/kg (+)-amphetamine- (n = 6) and, (B.) 5 mg/kg MDMA-induced (n = 6) increased locomotor activity. Photo beam breaks were recorded in 5 minute intervals, averaged over 15 min bins, and normalized to percent of baseline (see methods).