Cited by 174Neurotransmitter Receptor Influence on BehaviorNeural and Behavioral Psychology StudiesMemory and Neural Mechanisms

The Effects of Dopamine D1Receptor Blockade in the Prelimbic–Infralimbic Areas on Behavioral Flexibility

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Ragozzino, Michael E.·2002·Learning & Memory

Abstract

This study examined the effects of a dopamine D 1 antagonist, SCH23390, infused into the prelimbic–infralimbic areas on the acquisition of a response and visual-cue discrimination task, as well as a shift from a response to a visual-cue discrimination and vice versa. Each test was carried out in a cross-maze. The response discrimination required learning to always turn in the same direction (right or left) for a cereal reinforcement. The visual-cue discrimination required learning to always enter the arm with the visual cue. In experiment 1, rats were tested on the response discrimination task, followed by the visual-cue discrimination task. In experiment 2, the testing order was reversed. Bilateral infusions of SCH23390 (0.1 or 1 μg/0.5 μL) into the prelimbic–infralimbic areas did not impair acquisition of the response or visual-cue discrimination tasks. SCH23390 injections at 1 μg, but not 0.1 μg impaired performance when shifting from a response to a visual-cue discrimination, and vice versa. Analysis of the errors revealed that the deficit was due to perseveration of the previously learned strategy. These results suggest that activation of dopamine D 1 receptors in the prelimbic–infralimbic areas may be critical for the suppression of a previously relevant strategy and/or generating new strategies.

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  1. Paxinos, G. and Watson, C. 1996. In The rat brain in stereotaxic coordinates, 3d ed. Academic Press, Sydney, Australia.

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Authors
Ragozzino, M. E.
Affiliations
University of Illinois Chicago (US)
Corresponding author
Ragozzino, Michael E.
Venue
Learning & Memory
Published
2002-01-01
Volume
9
Issue
1
Pages
18-28
ISSN
  • 1072-0502 (ISSN-L)
  • 1549-5485
OpenAlex
W2105133778
Cited by
174
References
57
Citations by year
2025: 3 · 2024: 5 · 2023: 2 · 2022: 5 · 2021: 2 · 2020: 4 · 2019: 3 · 2018: 8 · 2017: 6 · 2016: 11 · 2015: 14 · 2014: 13 · 2013: 9 · 2012: 7
Type
posted content
Language
en
Open access
Locations
  • Learning & Memory (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of Mental Health (R03MH061889, MH61889)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
dopamine D1 receptor, SCH 23390, behavioral flexibility, strategy switching, perseveration
MeSH terms
Animals, Benzazepines, Cues, Discrimination Learning, Limbic System, Male, Microinjections, Receptors, Dopamine D1, Dopamine Antagonists, Maze Learning, Rats, Long-Evans, Rats

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