Effects of prenatal stress on anxiety during an elevated plus maze task. (A) % time spent in closed arms, open arms, and center zone, (B) entries into closed arms, open arms, and center zone, (C) total distance traveled, or (D) number of head dips. Each bar represents the mean ± SEM for each test group.* represents a significant difference (p<0.05) in performance between PNS and control rats. † represents a trend toward a significant difference (p < 0.10). PNS = prenatally stressed; CON = non-stressed controls. N = 12.