Cited by 297Neural and Behavioral Psychology StudiesMemory and Neural MechanismsNeurotransmitter Receptor Influence on Behavior

Effects of orbitofrontal, infralimbic and prelimbic cortical lesions on serial spatial reversal learning in the rat

Boulougouris, Vasileios, Dalley, Jeffrey W., Robbins, Trevor W.·2007·Behavioural Brain Research

Abstract

Background Recent evidence suggests that the neural correlates of reversal learning are localised to the orbitofrontal cortex whereas studies on the contribution of the medial prefrontal cortex to this capacity have produced equivocal results. This study examines the behavioural effects of selective lesions centred on orbitofrontal, infralimbic and prelimbic cortex on serial spatial reversal learning in the rat.Methods Rats were trained on a novel instrumental two-lever spatial discrimination and reversal learning task, measuring both 'cognitive flexibility' and constituent processes including response inhibition. Both levers were presented, only one of which was reinforced. The rat was required to respond on the reinforced lever under a fixed ratio 3 schedule of reinforcement. Following attainment of criterion, a series of reversals was presented.Results Bilateral excitotoxic lesions of the orbitofrontal cortex did not affect retention of a preoperatively acquired spatial discrimination but did impair reversal learning. This deficit manifested as increased perseverative responding on the previously correct lever. Although impairments were evident during reversal 1, OFC-lesioned animals performed significantly better than controls on reversal 2. There were no significant effects of infralimbic and prelimbic lesions on the retention of a spatial discrimination or reversal learning.Conclusions These results indicate that the orbitofrontal cortex is critical for flexible responding in serial spatial reversal learning. The present findings may be relevant to deficits in reversal learning and response inhibition in such neuropsychiatric disorders as obsessive-compulsive disorder.

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Crossref · 10.1016/j.bbr.2007.02.005

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Authors
Boulougouris, V., Dalley, J. W., & Robbins, T. W.
Affiliations
University of Cambridge (GB)
Corresponding author
Boulougouris, Vasileios
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
2007-05
Volume
179
Issue
2
Pages
219-228
ISSN
0166-4328 (ISSN-L)
OpenAlex
W2079658751
Cited by
297
References
51
Citations by year
2026: 4 · 2025: 6 · 2024: 12 · 2023: 17 · 2022: 9 · 2021: 18 · 2020: 9 · 2019: 14 · 2018: 15 · 2017: 18 · 2016: 15 · 2015: 27 · 2014: 15 · 2013: 25 · 2012: 14
FWCI
9.99
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Wellcome Trust
  • Mauritius Research Council
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
serial reversal learning, orbitofrontal cortex, infralimbic cortex, prelimbic cortex, medial prefrontal cortex, cognitive flexibility, response inhibition, perseverative responding, spatial discrimination, excitotoxic lesions, obsessive-compulsive disorder
MeSH terms
Analysis of Variance, Animals, Cerebral Cortex, Conditioning, Operant, Discrimination Learning, Frontal Lobe, Inhibition, Psychological, Limbic System, Male, Rats, Inbred Strains, Reinforcement, Psychology, Reversal Learning, Serial Learning, Rats

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