Cited by 96Memory and Neural MechanismsNeurotransmitter Receptor Influence on BehaviorNeural and Behavioral Psychology Studies

Blockade of dopamine activity in the nucleus accumbens impairs learning extinction of conditioned fear

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Holtzman-Assif, Orit, Laurent, Vincent, Westbrook, R. Frederick·2010·Learning & Memory

Abstract

Three experiments used rats to investigate the role of dopamine activity in learning to inhibit conditioned fear responses (freezing) in extinction. In Experiment 1, rats systemically injected with the D2 dopamine antagonist, haloperidol, froze more across multiple extinction sessions and on a drug-free retention test than control rats. In Experiment 2, rats extinguished under an intracerebroventricular (ICV) infusion of haloperidol suppressed fear responses across extinction but froze more on a subsequent drug-free retention test than control rats. In Experiment 3, rats extinguished under an infusion of haloperidol in the nucleus accumbens were impaired in suppressing fear responses across extinction and froze more on subsequent drug-free retention test than control rats. These results show that learning to inhibit fear responses in extinction requires dopamine activity in the nucleus accumbens. They were interpreted to mean that dopaminergic activity in the nucleus accumbens regulates the prediction error required for learning to inhibit fear responses in extinction.

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Crossref · 10.1101/lm.1668310

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Authors
Holtzman-Assif, O., Laurent, V., & Westbrook, R. F.
Affiliations
UNSW Sydney (AU)
Venue
Learning & Memory
Published
2010-02
Volume
17
Issue
2
Pages
71-75
ISSN
  • 1072-0502 (ISSN-L)
  • 1549-5485
OpenAlex
W2170041171
Cited by
96
References
6
Citations by year
2026: 1 · 2025: 5 · 2024: 7 · 2023: 9 · 2022: 4 · 2021: 8 · 2020: 7 · 2019: 12 · 2018: 6 · 2017: 8 · 2016: 4 · 2015: 5 · 2014: 4 · 2013: 4 · 2012: 6
Type
posted content
Language
en
Open access
Locations
  • Learning & Memory (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
dopamine, nucleus accumbens, fear extinction, fear conditioning, haloperidol, freezing behavior, prediction error, extinction retention, intracerebroventricular infusion
MeSH terms
Animals, Conditioning, Classical, Dopamine, Dose-Response Relationship, Drug, Extinction, Psychological, Fear, Haloperidol, Inhibition, Psychological, Injections, Intraventricular, Male, Nucleus Accumbens, Rats, Wistar, Dopamine Antagonists, Freezing Reaction, Cataleptic, Rats

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