Figure 1. Time course of PRA effects on %PPI (A) and startle magnitude (B).
A: PRA 1.0 mg/kg significantly reduced PPI during the first 30 minutes of testing, with maximal effects during the third 10-minute block. (*, p<0.03) B: Startle-reducing effects of PRA persist across 60 min. This difference was significant during blocks 1,2,3, and 6. A decrease in startle magnitude during blocks 4 and 5 of the vehicle condition likely account for the lack of significance of PRA effects during these time periods.