Dynamical modelling of sympathetic and parasympathetic interplay on the baroreceptor heart rate control (Q1380687)

The dynamic interaction between vagal and sympathetic efferent nerve activity on the heart rate baroreceptor control is analyzed by using a simple model of the short-term autonomic regulation of the heart rate. The authors show that the baroreflex regulation of cardiac period is a potential cause of cardiovascular variability and may induce oscillations with slow and high frequency in the heart rate and arterial pressure. However, the baroreceptor reflex affects not only heart activity but also the circulatory system and, in particular, the peripheral resistances. The authors verify that \(LF\) and \(HF\) oscillations persist also when the autonomic control of the peripheral resistance is simulated.