Fig. 3From: Brief periods of transcutaneous auricular vagus nerve stimulation improve autonomic balance and alter circulating monocytes and endothelial cells in patients with metabolic syndrome: a pilot studyAutonomic balance in control and TAVNS groups at baseline and after 8 weeks of follow-up. A LF/HF ratio, *p = 0.026; B LF% SPB *p = 0.037Back to article page