Depressor and Pressor Afferent Fibers in the Carotid Sinus Nerve of the Dog 1

Abstract

Summary

By progressively increasing the duration of an electrical stimulus, two barosensory and one chemosensory fiber groups have been illustrated in the CSN of the dog. Both barosensory fiber groups are more easily excited than the chemosensory fibers. In the cat, similar groups of fibers have been reported, but the chemosensory fibers are of intermediate excitability. All the fibers appear to exert their action on the sympathetic adrenergic system, since the response is blocked by bretylium, but not by atropine.