THE SALIVATORY MOTOR NUCLEI IN THE MONKEY

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Abstract
A study in the monkey of the distribution of medullary points the stimulation of which yields salivary flow revealed an excitable region comprising the dorsal midline area between the genu of the facial nerve and the hypoglossal nucleus, and extending laterally and ventrally through the reticular formation to the exits of the 7th and 9th nerves. While overlap existed, responses of the submaxillary gland were elicited predominantly from the rostral part of the excitable area and those of the parotid gland from the caudal part. The reactions are almost entirely ipsilateral, and are ascribed to the activation of the salivatory motor nuclei and their efferent root fibers.

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