Figure 5

Time course of changes in normalized low-frequency (LF) variability (LF/high frequency (HF) ratio), expressed as % of baseline values, after i.v. administration of nebivolol (open symbols) or vehicle (black symbols) in normotensive control rats (circles) and L-NAME hypertensive animals (squares). Each point shows the mean±s.e.m. of six rats. *P<0.05 vs. control rats by two-way analysis of variance (ANOVA) followed by Bonferroni post-test.