The effects of isolation-rearing on sucrose consumption in rats
Abstract
Three experiments examined the hypothesis that social isolation of weanling rats potentiates hedonic processes by examining the consumption of sucrose solutions. In the first experiment no differences in consumption were found between socially reared rats and isolation-reared rats allowed to consume sucrose in a familiar test apparatus. In a second experiment socially-reared rats and isolation-reared rats were food and water deprived. Again, no differences in consumption were found. In a third experiment socially reared and isolation-reared rats were allowed to consume sucrose presented in either an ascending or descending order of concentration. When given sucrose in an ascending order of presentation isolation-reared rats consumed significantly more sucrose than socially reared rats. This suggests that isolation-rearing increased the effects of positive contrast, and is consistent with other observations of increased incentive motivation in isolates.
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Social isolation increases indices of approach motivation, including enhanced responding for increasing sucrose concentrations and greater conditioned responses to sucrose-related stimuli.
“Increased indices of approach motivation are also found following social isolation, with evidence of enhanced responding for increasing concentrations of sucrose (Cuenya et al., 2015; Hall et al., 1997), as well as greater conditioned responses to sucrose-related stimuli (Jones et al., 1990).”
From The effects of early life stress on reward processing (2018) · cites this paper as Hall et al., 1997
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References 37 · Cited by 54
- Authors
- HALL, F., HUMBY, T., WILKINSON, L., & ROBBINS, T.
- Affiliations
- University of Cambridge (GB)
- Corresponding author
- HALL, F
- Venue
- Physiology & Behavior
- Publisher
- Elsevier BV
- Published
- 1997-08
- Volume
- 62
- Issue
- 2
- Pages
- 291-297
- ISSN
- 0031-9384 (ISSN-L)
- OpenAlex
- W2142972276
- Cited by
- 54
- References
- 37
- Citations by year
- 2024: 2 · 2021: 2 · 2020: 1 · 2019: 4 · 2018: 3 · 2017: 2 · 2016: 2 · 2015: 6 · 2014: 3 · 2013: 2 · 2012: 5
- FWCI
- 0.66
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physiology & Behavior (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Wellcome Trust
- National Institutes of Health (5f31da005408-02)
- National Institute on Drug Abuse (DA 05408)
- 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 › Behavioral Neuroscience › Stress Responses and Cortisol
- Keywords
- social isolation, isolation rearing, sucrose intake, incentive motivation, positive contrast, food and water deprivation, weanling rats, social rearing
- MeSH terms
- Animals, Environment, Feeding Behavior, Food Deprivation, Lighting, Male, Reward, Social Environment, Social Isolation, Sucrose, Water Deprivation, Rats
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