Cortical Hub for Flavor Sensation in Rodents

The experience of eating is inherently multimodal, combining intraoral gustatory, olfactory, and somatosensory signals into a single percept called flavor. As foods and beverages enter the mouth, movements associated with chewing and swallowing activate somatosensory receptors in the oral cavity, di...

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Autores principales: Chad L. Samuelsen, Roberto Vincis
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Publicado: Frontiers Media S.A. 2021
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Acceso en línea:https://doaj.org/article/edcbf6f0894d4f09a881963630d132ef
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spelling oai:doaj.org-article:edcbf6f0894d4f09a881963630d132ef2021-11-15T04:55:08ZCortical Hub for Flavor Sensation in Rodents1662-513710.3389/fnsys.2021.772286https://doaj.org/article/edcbf6f0894d4f09a881963630d132ef2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fnsys.2021.772286/fullhttps://doaj.org/toc/1662-5137The experience of eating is inherently multimodal, combining intraoral gustatory, olfactory, and somatosensory signals into a single percept called flavor. As foods and beverages enter the mouth, movements associated with chewing and swallowing activate somatosensory receptors in the oral cavity, dissolve tastants in the saliva to activate taste receptors, and release volatile odorant molecules to retronasally activate olfactory receptors in the nasal epithelium. Human studies indicate that sensory cortical areas are important for intraoral multimodal processing, yet their circuit-level mechanisms remain unclear. Animal models allow for detailed analyses of neural circuits due to the large number of molecular tools available for tracing and neuronal manipulations. In this review, we concentrate on the anatomical and neurophysiological evidence from rodent models toward a better understanding of the circuit-level mechanisms underlying the cortical processing of flavor. While more work is needed, the emerging view pertaining to the multimodal processing of food and beverages is that the piriform, gustatory, and somatosensory cortical regions do not function solely as independent areas. Rather they act as an intraoral cortical hub, simultaneously receiving and processing multimodal sensory information from the mouth to produce the rich and complex flavor experience that guides consummatory behavior.Chad L. SamuelsenRoberto VincisFrontiers Media S.A.articleflavorchemosensorymultimodalcortexolfactiongustationNeurosciences. Biological psychiatry. NeuropsychiatryRC321-571ENFrontiers in Systems Neuroscience, Vol 15 (2021)
institution DOAJ
collection DOAJ
language EN
topic flavor
chemosensory
multimodal
cortex
olfaction
gustation
Neurosciences. Biological psychiatry. Neuropsychiatry
RC321-571
spellingShingle flavor
chemosensory
multimodal
cortex
olfaction
gustation
Neurosciences. Biological psychiatry. Neuropsychiatry
RC321-571
Chad L. Samuelsen
Roberto Vincis
Cortical Hub for Flavor Sensation in Rodents
description The experience of eating is inherently multimodal, combining intraoral gustatory, olfactory, and somatosensory signals into a single percept called flavor. As foods and beverages enter the mouth, movements associated with chewing and swallowing activate somatosensory receptors in the oral cavity, dissolve tastants in the saliva to activate taste receptors, and release volatile odorant molecules to retronasally activate olfactory receptors in the nasal epithelium. Human studies indicate that sensory cortical areas are important for intraoral multimodal processing, yet their circuit-level mechanisms remain unclear. Animal models allow for detailed analyses of neural circuits due to the large number of molecular tools available for tracing and neuronal manipulations. In this review, we concentrate on the anatomical and neurophysiological evidence from rodent models toward a better understanding of the circuit-level mechanisms underlying the cortical processing of flavor. While more work is needed, the emerging view pertaining to the multimodal processing of food and beverages is that the piriform, gustatory, and somatosensory cortical regions do not function solely as independent areas. Rather they act as an intraoral cortical hub, simultaneously receiving and processing multimodal sensory information from the mouth to produce the rich and complex flavor experience that guides consummatory behavior.
format article
author Chad L. Samuelsen
Roberto Vincis
author_facet Chad L. Samuelsen
Roberto Vincis
author_sort Chad L. Samuelsen
title Cortical Hub for Flavor Sensation in Rodents
title_short Cortical Hub for Flavor Sensation in Rodents
title_full Cortical Hub for Flavor Sensation in Rodents
title_fullStr Cortical Hub for Flavor Sensation in Rodents
title_full_unstemmed Cortical Hub for Flavor Sensation in Rodents
title_sort cortical hub for flavor sensation in rodents
publisher Frontiers Media S.A.
publishDate 2021
url https://doaj.org/article/edcbf6f0894d4f09a881963630d132ef
work_keys_str_mv AT chadlsamuelsen corticalhubforflavorsensationinrodents
AT robertovincis corticalhubforflavorsensationinrodents
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