Figure 2.

Cardiovascular activity and serum corticosterone following each stress session in Experiment 1. The psychosocial stress group displayed greater HR (top left), systolic BP (top right), diastolic BP (bottom right) and serum corticosterone concentrations (bottom left) than the no psychosocial stress group following each stress session. Additionally, the psychosocial stress group demonstrated significantly greater systolic and diastolic BP after the second stress session, relative to the first stress session. ^*p < 0.05; ^**p < 0.01; ^***p < 0.0001 versus the no psychosocial stress group. Data are group means ± SEM.