Spatiotemporal Coding of Individual Chemicals by the Gustatory System

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Sam ReiterMark Stopfer

Abstract

Four of the five major sensory systems (vision, olfaction, somatosensation, and audition) are thought to use different but partially overlapping sets of neurons to form unique representations of vast numbers of stimuli. The only exception is gustation, which is thought to represent only small numbers of basic taste categories. However, using new methods for delivering tastant chemicals and making electrophysiological recordings from the tractable gustatory system of the moth Manduca sexta, we found chemical-specific information is as follows: (1) initially encoded in the population of gustatory receptor neurons as broadly distributed spatiotemporal patterns of activity; (2) dramatically integrated and temporally transformed as it propagates to monosynaptically connected second-order neurons; and (3) observed in tastant-specific behavior. Our results are consistent with an emerging view of the gustatory system: rather than constructing basic taste categories, it uses a spatiotemporal population code to generate unique neural representations of individual tastant chemicals. Our results provide a new view of taste processing. Using a new, relatively simple model system and a new set of techniques to deliver taste stimuli and to ex...Continue Reading

Citations

Dec 5, 2015·Frontiers in Integrative Neuroscience·Alice FrenchFrédéric Marion-Poll
May 6, 2016·ELife·Alexander HaverkampDanny Kessler
Jun 23, 2016·Journal of Neurogenetics·Pavel Masek, Alex C Keene
Sep 21, 2016·Current Opinion in Neurobiology·Geraldine A Wright
May 10, 2017·Natural Product Reports·Stefan PentzoldWilhelm Boland
Jan 13, 2018·Annual Review of Entomology·Kristin Scott
Mar 19, 2019·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Anna Lisa Stöckl, Almut Kelber
Apr 11, 2021·Nature Communications·Shiva Subbulakshmi RadhakrishnanSaptarshi Das
Sep 16, 2021·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Stuart A McCaughey

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