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Hemodynamic changes during electrical stimulation of some bulbar cardiovascular structures

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Abstract

The effect of electrical stimulation was studied on the nucleus of the tractus solitarius, the nucleus cuneatus, and the dorsal motor nucleus of the vagus nerve, i.e., structures of the bulbar cardiovascular sector in which it has been postulated that impulses from the sinoaortic reflexogenic zone are relayed to the cardiovascular system. Stimulation of all the structures tested in acute experiments on cats under chloralose-Nembutal anesthesia evoked depressor responses of varied degree, the hemodynamic basis of which was a decrease in the cardiac output (CO). The effect of stimulation of the nucleus cuneatus on the development of the negative chronotropic effect was observed. The dorsal motor nucleus of the vagus nerve in cats is not the only or even the principal zone from which negative chronotropic influences are exerted on the heart.

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Authors
  1. M. I. Gurevich
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  2. L. N. Shapoval
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Additional information

A. A. Bogomolets Institute of Physiology, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Neirofiziologiya, Vol.3, No.6, pp.631–636, November–December, 1971.

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Gurevich, M.I., Shapoval, L.N. Hemodynamic changes during electrical stimulation of some bulbar cardiovascular structures. Neurophysiology 3, 471–475 (1971). https://doi.org/10.1007/BF01063760

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  • DOI: https://doi.org/10.1007/BF01063760

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