Cited by 589Regulation of Appetite and ObesityBiochemical Analysis and Sensing TechniquesNeurotransmitter Receptor Influence on Behavior

The taste reactivity test. II. Mimetic responses to gustatory stimuli in chronic thalamic and chronic decerebrate rats

Grill, Harvey J., Norgren, Ralph·1978·Brain Research

Abstract

The taste reactivity test described in the preceding paper was used to begin determining the capacity of brain stem structures to execute and regulate ingestive behavior. Both chronic thalamic and chronic decerebrate rat preparations were examined repeatedly, and their gustatory mimetic responses compared through frame-by-frame videotape analysis with the responses of neurologically normal controls. In response to orally injected taste stimuli, chronic decerebrate rats executed the same mimetic response components, and very similar response sequences observed in intact rats. In contrast, all taste stimuli elicited a quinine-like rejection sequence from chronic thalamic rats. In thalamic rats mimetic responses associated with ingestion were completely absent. Based on the similarities in the ingestion and rejection responses of decerebrate and intact rats, it appears that discriminative responses to taste result from integrative mechanisms complete within, or caudal to, the midbrain. Since decerebrate rats have the capacity to execute both ingestion and rejection response sequences, neural mechanisms rostral to the midbrain in some way suppress ingestion and/or releaser ejection responses in the thalamic preparation.

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Crossref · 10.1016/0006-8993(78)90569-3

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  • Expression of the characteristic happy face when tasting sweets appears to be neurologically organized within the brainstem.

    “As demonstrated in the decerebrate rat ([70](#B70)) and anencephalic baby ([171](#B171)), expression of the characteristic happy face when tasting sweets ([11](#B11), [13](#B13)) appears to be neurologically organized within the brainstem”

    From Food reward, hyperphagia, and obesity (2011) · cites this paper as [70]

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Authors
Grill, H. J., & Norgren, R.
Affiliations
Rockefeller University (US)
Venue
Brain Research
Publisher
Elsevier BV
Published
1978-03
Volume
143
Issue
2
Pages
281-297
ISSN
0006-8993 (ISSN-L)
OpenAlex
W1989396341
Cited by
588
References
28
Citations by year
2026: 3 · 2025: 15 · 2024: 4 · 2023: 4 · 2022: 6 · 2021: 9 · 2020: 12 · 2019: 14 · 2018: 7 · 2017: 5 · 2016: 16 · 2015: 17 · 2014: 18 · 2013: 11 · 2012: 15
FWCI
11.50
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research (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 › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
taste reactivity, ingestion, taste aversion, thalamic lesions, decerebrate preparation, brainstem, midbrain, ingestive behavior, taste discrimination
MeSH terms
Animals, Decerebrate State, Dose-Response Relationship, Drug, Drinking Behavior, Hydrochloric Acid, Male, Methods, Mouth, Quinine, Sodium Chloride, Sucrose, Taste, Thalamus, Tongue, Rats

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