Cited by 70Gambling Behavior and TreatmentsNeurotransmitter Receptor Influence on BehaviorNeural and Behavioral Psychology Studies

Under the influence: Effects of adolescent ethanol exposure and anxiety on motivation for uncertain gambling-like cues in male and female rats

Hellberg, Samantha N., Levit, Jeremy D., Robinson, Mike J.F.·2018·Behavioural Brain Research

Abstract

Gambling disorder (GD) frequently co-occurs with alcohol use and anxiety disorders, suggesting possible shared mechanisms. Recent research suggests reward uncertainty may powerfully enhance attraction towards reward cues. Here, we examined the effects of adolescent ethanol exposure, anxiety, and reward uncertainty on cue-triggered motivation. Male and female adolescent rats were given free access to ethanol or control jello for 20days. Following withdrawal, rats underwent autoshaping on a certain (100%-1) or uncertain (50%-1-2-3) reward contingency, followed by single-session conditioned reinforcement and progressive ratio tasks, and 7days of omission training, during which lever pressing resulted in omission of reward. Finally, anxiety levels were quantified on the elevated plus maze. Here, we found that uncertainty narrowed cue attraction by significantly increasing the ratio of sign-tracking to goal-tracking, particularly amongst control jello and high anxiety animals, but not in animals exposed to ethanol during adolescence. In addition, attentional bias towards the lever cue was more persistent under uncertain conditions following omission training. We also found that females consumed more ethanol, and that uncertainty mitigated the anxiolytic effects of ethanol exposure observed in high ethanol intake animals under certainty conditions. Our results further support that reward uncertainty biases attraction towards reward cues, suggesting also that heightened anxiety may enhance vulnerability to the effects of reward uncertainty. Chronic, elevated alcohol consumption may contribute to heightened anxiety levels, while high anxiety may promote the over-attribution of incentive value to reward cues, highlighting possible mechanisms that may drive concurrent anxiety, heavy drinking, and problematic gambling.

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Crossref · 10.1016/j.bbr.2017.09.036

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Authors
Hellberg, S. N., Levit, J. D., & Robinson, M. J. F.
Affiliations
Wesleyan University (US)
Corresponding author
Robinson, Mike J.F.
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
2018-01
Volume
337
Pages
17-33
ISSN
0166-4328 (ISSN-L)
OpenAlex
W2756943806
Cited by
70
References
102
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2023: 3 · 2022: 4 · 2021: 5 · 2020: 46 · 2019: 6 · 2018: 3
FWCI
18.65
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Wesleyan University
Topics
  • Social Sciences › Psychology › Clinical Psychology › Gambling Behavior and Treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
adolescent ethanol exposure, anxiety, reward uncertainty, sign-tracking, goal tracking, attentional bias, sex differences, alcoholism, gambling addiction, incentive salience
MeSH terms
Alcohol Drinking, Ethanol, Animals, Animals, Newborn, Anxiety, Central Nervous System Depressants, Conditioning, Operant, Cues, Disease Models, Animal, Female, Gambling, Male, Motivation, Random Allocation, Reward, Sex Factors, Time Factors, Rats, Sprague-Dawley, Maze Learning, Uncertainty, Rats

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