Secretions of von Ebner's glands influence responses from taste buds in rat circumvallate papilla

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Abstract
The influence of secretions from von Ebner's lingual salivary glands on gustatory function was studied in the rat. Neurophysiological taste responses elicited by chemical stimulation of the circumvallate papilla were recorded from the glossopharyngeal nerve while initiating salivary secretion in the same papilla. Salivary secretion from von Ebner's glands significantly reduced taste responses to stimulation of the circumvallate papilla with various chemicals. However, the magnitude of the reduction in response differed depending on the taste stimulus used. The reduction in response due to salivary secretion was blocked by prior administration of the parasympathetic antagonist, atropine. These results demonstrate a direct effect of salivary secretion on taste responses and illustrate the close relationship between taste function and the secretion of von Ebner's glands.

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