Chemosensitive responses from the cat epiglottis

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Abstract
Responses were recorded from single and few-fiber preparations of the cat superior laryngeal nerve during stimulation of the epiglottis with 0.5 M KCl, NH 4 Cl, NaCl, and LiCl; distilled water, 0.005 M citric acid, 0.01 N HCl; and light touch. Epiglottal receptive fields were mapped. The order of effective stimuli is KCl > HCl > NH 4 Cl > distilled water > citric acid; NaCl and LiCl are generally not effective. Since (a) similar stimuli elicit responses from the cat chorda tympani nerve during stimulation of tongue taste buds, and (b) receptive fields of superior laryngeal nerve fibers compare well with a map of epiglottal taste buds, we conclude that the chemosensitive responses from the epiglottis are probably mediated by taste buds.

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