Electroencephalographic Evidence of Osmosensitive Elements in Olfactory Bulb of Dog Brain.

Abstract

Intracarotid injections of hypertonic saline and sugar solutions in the dog induce characteristic synchronous EEG changes in the olfactory bulb which are independent of influences from the olfactory epithelium or the rest of brain. In the intact brain, these osmosensitive elements in the bulb transmit their nervous impulses caudally along olfactory pathways, but their influence on the supraoptico-neurohypophysial system is unknown.