The sweet taste in the calf. I. Chorda tympani proper nerve responses to taste stimulation of the tongue.
Electrophysiological recordings were obtained from the chorda tympani nerve in calves during stimulation with NaCl, quinine hydrochloride, citric acid, acesulfan-K, aspartame, fructose, galactose, glucose, glycine, lactose, maltose, monellin, Na-saccharin, sucrose, thaumatin, and xylitol. In cattle the chorda tympani innervates the posterior third of the tongue as well as the anterior part. It was found that the posterior receptive field generally responded better to sweet substances than the anterior. Glycine and Na-saccharin followed by xylitol were the most effective sweet stimuli. The monosaccharides elicited larger responses than the disaccharides. Aspartame gave a weak nerve response in 5 of 13 calves. Monellin and thaumatin elicited no change in chorda tympani nerve activity and did not crossadapt with any sweetener. No effects on citric acid responses were observed after application of miraculin.
University of Wisconsin-Madison, Department of Veterinary Science 53706.
C H
CH
Segerstad
G
G
Hellekant
D000818:Animals; D002241:Carbohydrates / Q000494:pharmacology*; D002417:Cattle / Q000502:physiology*; D002814:Chorda Tympani Nerve / Q000502:physiology*; D004594:Electrophysiology; D008297:Male; D013549:Sweetening Agents / Q000494:pharmacology*; D013649:Taste / Q000502:physiology*; D013997:Time Factors; D014059:Tongue / Q000502:physiology
D002241:Carbohydrates; D013549:Sweetening Agents