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Sodium depletion enhances salt palatability in rats
Abstract
Sterotyped fixed action patterns (FAPs) are elicited in rats by oral infusions of taste solutions. These taste-elicited FAPs can be classified as either ingestive or aversive. They reflect the palatability of the taste and can be modified by learning and by the physiological state of the animal. These studies demonstrated that when the physiological state of the rat is altered by sodium depletion, the pattern of FAPs elicited by oral infusions of 0.5 M NaCl shifts from a mixture of ingestive and aversive components (while sodium replete) to exclusively ingestive ones (while sodium deplete). This shift in taste reactivity occurred the first time the rats were made sodium deplete. A similar shift was not observed to accompany infusions of 0.01 M HCl, a taste solution that also elicited mixed ingestive and aversive FAPs. This result suggests that the shift in response to NaCl is not due to a general change in ingestive bias or to a general taste deficit. On the basis of the change in FAPs, it is concluded that the palatability of highly concentrated salt solutions increases in sodium-deplete rats. Such a shift in salt palatability may be instrumental in directing the appetitive behavior of the animal.
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“Sodium depletion causes a robust and highly specific motivation to consume sodium, such that salt solutions that are negative/aversive in the replete state become preferred/rewarding in sodium-depleted animals”
From FGF21 and the physiological regulation of macronutrient preference (2020) · cites this paper as [19]
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Metadata
- Authors
- Berridge, K. C., Flynn, F. W., Schulkin, J., & Grill, H. J.
- Venue
- Behavioral Neuroscience
- Published
- 1984
- Volume
- 98
- Issue
- 4
- Pages
- 652-660
- ISSN
- 0735-7044 (ISSN-L)
- 1939-0084
- OpenAlex
- W4234619845
- Cited by
- 257
- References
- 0
- Citations by year
- 2026: 3 · 2025: 4 · 2024: 7 · 2023: 7 · 2022: 4 · 2021: 4 · 2020: 8 · 2019: 44 · 2018: 12 · 2017: 1 · 2016: 12 · 2015: 9 · 2014: 7 · 2013: 4 · 2012: 12
- FWCI
- 4.22
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Behavioral Neuroscience (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Nursing › Nutrition and Dietetics › Sodium Intake and Health
- Health Sciences › Nursing › Nutrition and Dietetics › Biochemical Analysis and Sensing Techniques
- Life Sciences › Neuroscience › Sensory Systems › Olfactory and Sensory Function Studies
- Keywords
- sodium depletion, sodium appetite, sodium chloride taste, taste preference
- MeSH terms
- Animals, Appetite, Humans, Male, Sodium Chloride, Stereotyped Behavior, Taste, Rats
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