Cited by 466Regulation of Appetite and ObesityBiochemical Analysis and Sensing TechniquesOlfactory and Sensory Function Studies

Hunger Modulates the Responses to Gustatory Stimuli of Single Neurons in the Caudolateral Orbitofrontal Cortex of the Macaque Monkey

Rolls, Edmund T., Sienkiewicz, Zenon J., Yaxley, Simon·1989·European Journal of Neuroscience

Abstract

In order to determine whether the responsiveness of neurons in the caudolateral orbitofrontal cortex (a secondary cortical gustatory area) is influenced by hunger, the activity evoked by prototypical taste stimuli (glucose, NaCl, HCl, and quinine hydrochloride) and fruit juice was recorded in single neurons in this cortical area before, while, and after cynomolgous macaque monkeys were fed to satiety with glucose or fruit juice. It was found that the responses of the neurons to the taste of the glucose decreased to zero while the monkey ate it to satiety during the course of which his behaviour turned from avid acceptance to active rejection. This modulation of responsiveness of the gustatory responses of the neurons to satiety was not due to peripheral adaptation in the gustatory system or to altered efficacy of gustatory stimulation after satiety was reached, because modulation of neuronal responsiveness by satiety was not seen at earlier stages of the gustatory system, including the nucleus of the solitary tract, the frontal opercular taste cortex, and the insular taste cortex. The decreases in the responsiveness of the neurons were relatively specific to the food with which the monkey had been fed to satiety. For example, in seven experiments in which the monkey was fed glucose solution, neuronal responsiveness decreased to the taste of the glucose but not to the taste of blackcurrant juice. Conversely, in two experiments in which the monkey was fed to satiety with fruit juice, the responses of the neurons decreased to fruit juice but not to glucose. These and earlier findings lead to a proposed neurophysiological mechanism for sensory‐specific satiety in which the information coded by single neurons in the gustatory system becomes more specific through the processing stages consisting of the nucleus of the solitary tract, the taste thalamus, and the frontal opercular and insular taste primary taste cortices, until neuronal responses become relatively specific for the food tasted in the caudolateral orbitofrontal cortex (secondary) taste area. Then sensory‐specific satiety occurs because in this caudolateral orbitofrontal cortex taste area (but not earlier in the taste system) it is a property of the synapses that repeated stimulation results in a decreased neuronal response. Evidence was obtained that gustatory processing involved in thirst also becomes interfaced to motivation in the caudolateral orbitofrontal cortex taste projection area, in that neuronal responses here to water were decreased to zero while water was drunk until satiety was produced.

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Crossref · 10.1111/j.1460-9568.1989.tb00774.x

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  • In the orbitofrontal cortex and amygdala of monkeys, individual neurons responsive to the taste of specific nutrients such as glucose, amino acids, and fat were modulated by hunger in a sensory-specific manner.

    “In the orbitofrontal cortex and amygdala of monkeys, individual neurons responsive to the taste of specific nutrients such as glucose, amino acids, and fat were modulated by hunger in a sensory-specific manner”

    From Food reward, hyperphagia, and obesity (2011) · cites this paper as [140]

  • In devaluation experiments, taste, olfactory, visual and oral texture neurons in the macaque orbitofrontal cortex respond to food when hunger is present, and not after feeding to satiety when the food is no longer rewarding.

    “in devaluation experiments, taste, olfactory, visual and oral texture neurons in the macaque orbitofrontal respond to food when hunger is present, and not after feeding to satiety when the food is no longer rewarding (Rolls et al., 1989; Critchley and Rolls, 1996).”

    From The orbitofrontal cortex: reward, emotion and depression (2020) · cites this paper as Rolls et al., 1989

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Research works printed but not linked: 2

  1. Rolls, E. T., Scott, T. R., Sienkiewicz, Z. J., and Yaxley, S. (1988) The B. G. (eds.) The Neural Basis of Feeding and Reward. Haer Institute for Electrophysiological Research, Brunswick, Maine.
  2. Rolls, E. T. and Rolls, B. J. (1982) Brain mechanisms involved in feeding. In: Barker, L. M. (ed.) Psychobiology of Human Food Selection ch. 3 pp. 33-62. AVI Publishing Company, Westport, Connecticut.

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Authors
Rolls, E. T., Sienkiewicz, Z. J., & Yaxley, S.
Affiliations
University of Oxford (GB)
Corresponding author
Rolls, Edmund T.
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
1989-01
Volume
1
Issue
1
Pages
53-60
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W1973024069
Cited by
466
References
45
Citations by year
2026: 5 · 2025: 7 · 2024: 5 · 2023: 4 · 2022: 10 · 2021: 13 · 2020: 11 · 2019: 14 · 2018: 11 · 2017: 10 · 2016: 14 · 2015: 14 · 2014: 13 · 2013: 20 · 2012: 21
FWCI
3.53
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal of Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Health Sciences › Nursing › Nutrition and Dietetics › Biochemical Analysis and Sensing Techniques
  • Life Sciences › Neuroscience › Sensory Systems › Olfactory and Sensory Function Studies
Keywords
gustatory neurons, sensory-specific satiety, satiety, glucose, fruit juice, taste cortex, nucleus tractus solitarius, thirst, water intake, motivation, macaque, single-unit recording, synaptic depression, taste adaptation

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