Reports

Two gustatory systems: facial and vagal gustatory nuclei have different brainstem connections

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Science  15 Feb 1985:
Vol. 227, Issue 4688, pp. 776-778
DOI: 10.1126/science.3969566

Abstract

The gustatory sense in catfish consists of two dissociable components, a facial nerve system used for food selection and a vagal nerve system involved in swallowing. Neural tracing experiments demonstrate that the primary sensory nucleus for the facial gustatory system is connected to the reticular formation and trigeminal nuclei. In contrast, the primary sensory nucleus for the vagal gustatory system is connected to the motoneurons that mediate swallowing. These results provide anatomical evidence for parallel gustatory systems within the vertebrate central nervous system.