The mammalian blood pressure regulating system exhibits characteristics of a sampled regulatory system, with afferent information in the carotid-sinus baroreceptor reflex stabilizing systemic blood pressure through its pulsating nature.
Findings warrant no clinical change; hypothesis-generating for sampled baroreflex models in mammals.
Abstract Öberg, P. Å. and U. Sjöstrand, Studies of blood‐pressure regulation. III. Dynamics of arterial blood pressure on carotid‐sinus nerve stimulation. Acta physiol. scand. 1971. 81. 96–109. An analysis of the properties of the blood pressure regulatory system has been made by means of carotid‐sinus nerve stimulation. The method used involves analog simulation of the nonlinear properties of this reflex. The analysis gives the gain‐frequency and the gain‐phase shift curves characterizing the system under study. A resonance frequency for the system is mostly found in the frequency range 0.03–0.06 Hz. Modulation of the control signal decreases the systemic bandwidth. Non‐linear simulation indicates that the mammalian blood pressure regulating system has some of the characteristics of a sampled regulatory system. The afferent information in the carotid‐sinus baroreceptor reflex stabilizes the systemic blood pressure by means of its pulsating nature. Transfer functions characterizing the system under study are given. The data presented are relevant to the functional characteristics of baropacer systems.
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