Cited by 356Neurotransmitter Receptor Influence on BehaviorRegulation of Appetite and ObesityOlfactory and Sensory Function Studies

Taste reactivity analysis of 6-hydroxydopamine-induced aphagia: Implications for arousal and anhedonia hypotheses of dopamine function.

Berridge, Kent C., Venier, Isabel L., Robinson, Terry E.·1989·Behavioral Neuroscience

Abstract

The deficits in feeding and drinking that result from 6-hydroxydopamine (6-OHDA) lesions of the mesostriatal dopamine system are often explained using either sensorimotor arousal or anhedonia hypotheses. Sensorimotor arousal hypotheses posit that dopamine systems facilitate the capacity of sensory stimuli to activate any motor output. The anhedonia hypothesis suggests that dopamine systems amplify the hedonic impact of positive reinforcers. Natural palatability-dependent ingestive and aversive actions, which are emitted by rats to tastes, provide a sensitive test that can discriminate between these hypotheses: A reduction of sensorimotor arousal should diminish the ability of tastes to elicit any actions, whereas anhedonia should shift the balance between positive and aversive actions. To directly compare these two hypotheses, taste reactivity was examined in rats made aphagic by intranigral 6-OHDA injections. The results did not support either of these predictions: Taste reactivity was essentially unchanged. The persistence of normal taste reactivity argues against both an anhedonia and a global sensorimotor arousal interpretation and provides further evidence that the capacity for hedonics can be neurologically dissociated from motivated appetitive behavior. An incentive attribution hypothesis that can account for the results is discussed, along with its implications for a wide range of phenomena associated with dopamine depletion.

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Crossref · 10.1037/0735-7044.103.1.36

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  • In rats, complete removal of nearly all dopamine by neurochemical brain lesions left sweetness 'liking' completely normal and unimpaired, despite eliminating all 'wanting' to eat.

    “Further, even complete removal of nearly all dopamine by neurochemical brain lesions left rats’ sweetness ‘liking’ completely normal and unimpaired, despite eliminating all ‘wanting’ to eat (Berridge et al., 1989).”

    From Evolving Concepts of Emotion and Motivation (2018) · cites this paper as Berridge et al., 1989

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Authors
Berridge, K. C., Venier, I. L., & Robinson, T. E.
Affiliations
University of Michigan (US)
Venue
Behavioral Neuroscience
Published
1989-02
Volume
103
Issue
1
Pages
36-45
ISSN
  • 0735-7044 (ISSN-L)
  • 1939-0084
OpenAlex
W4239398105
Cited by
356
References
0
Citations by year
2026: 2 · 2025: 14 · 2024: 12 · 2023: 19 · 2022: 12 · 2021: 6 · 2020: 54 · 2019: 42 · 2018: 9 · 2017: 8 · 2016: 10 · 2015: 11 · 2014: 2 · 2013: 7 · 2012: 12
FWCI
2.84
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioral Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute of Mental Health (MH-37277)
  • National Institute of Neurological Disorders and Stroke (NS-23959)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Life Sciences › Neuroscience › Sensory Systems › Olfactory and Sensory Function Studies
Keywords
6-hydroxydopamine, aphagia, taste reactivity, dopaminergic activity, arousal hypothesis, dopamine depletion, dietary intake
MeSH terms
Animals, Feeding and Eating Disorders, Arousal, Dopamine, Hydroxydopamines, Male, Rats, Inbred Strains, Taste, Oxidopamine, Rats

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