Beat-to-beat heart rate fluctuations, specifically their frequency and amplitude, indicate the modulation of underlying cardiac autonomic control systems.
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What is most intriguing about heart rate (HR) variability is that there is so much of it. HR is constantly responding both rapidly and slowly to various physiological perturbations. We now understand that the frequency and amplitude of these HR fluctuations are indicative of the autonomic control systems underlying the response.
JP Saul (Thu,) reported a other. Beat-to-beat heart rate fluctuations, specifically their frequency and amplitude, indicate the modulation of underlying cardiac autonomic control systems.