Cited by 148Neural and Behavioral Psychology StudiesMemory and Neural MechanismsNeurotransmitter Receptor Influence on Behavior

Amygdala and Orbitofrontal Cortex Lesions Differentially Influence Choices during Object Reversal Learning

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Rudebeck, Peter H., Murray, Elisabeth A.·2008·The Journal of Neuroscience

Abstract

In nonhuman primates, interaction between the orbitofrontal cortex (OFC) and the amygdala (AMG) has been seen as critical for learning and subsequently changing associations between stimuli and reinforcement. However, it is still unclear what the precise role of the OFC is in altering these stimulus–reward associations, and recent research has questioned whether the AMG makes an essential contribution at all. To gain a better understanding of the role of these two structures in flexibly associating stimuli with reinforcement, we reanalyzed a set of previously published data from groups of monkeys with either OFC or AMG lesions that had been tested on an object reversal learning task. Based on trial-by-trial analyses of rewarded and unrewarded choices, we report two new findings. First, monkeys with OFC lesions were, compared with both control and AMG groups, unable to use correctly performed trials to optimally guide subsequent choices. Second, monkeys with AMG lesions showed the opposite pattern of behavior. This group benefited more than controls from correctly performed trials that followed an error. Finally, as has been reported by others, after a change in reward contingencies, monkeys with OFC lesions also showed a slightly greater tendency to choose the previously rewarded object. These findings demonstrate that the OFC and AMG make different contributions to object reversal learning not highlighted previously.

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Crossref · 10.1523/jneurosci.2272-08.2008

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  • Lesions of the orbital cortex produce a deficit in using reward as a guide to behavior.

    “In addition, lesions of the orbital cortex produce a deficit in the ability to use reward as a guide to behavior (Rudebeck and Murray, 2008)”

    From Neurocircuitry of Mood Disorders (2010) · cites this paper as Rudebeck and Murray, 2008

    The Discussion reports that monkeys with orbitofrontal cortex lesions were impaired at using reward information to guide subsequent choices. The claim omits an important limit: this deficit was observed after a reversal, while initial discrimination learning was unaffected. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • PFo lesions cause an inefficiency in using positive feedback.

    “This analysis shows that PFo lesions cause an inefficiency in using positive feedback (blue asterisks in Fig. 4B).”
  • Trial-by-trial analysis indicates both PFo and amygdala lesions influence the use of positive feedback, in opposite directions.

    “A more detailed, trial-by-trial analysis indicates that both PFo and amygdala lesions influence the use of positive feedback. As Figure 4B shows, however, they do so in opposite directions.”
  • PFo lesions cause a deficit in using positive feedback, but not in the use of negative feedback.

    “These findings indicate that PFo lesions cause a deficit in using positive feedback, but not in the use of negative feedback (91, but cf. 94).”
  • Selective bilateral amygdala lesions cause an improvement in using positive feedback to make future choices.

    “In contrast to the deficits seen after PFo lesions, selective bilateral amygdala lesions cause an improvement in using positive feedback to make future choices (red asterisk in Fig. 4B).”

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Research works printed but not linked: 1

  1. Mishkin M Warren JM Akert K Perseveration of central sets after frontal lesions in monkeys The frontal granular cortex and behavior 1964 219 241 McGraw-Hill New York

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Authors
Rudebeck, P. H., & Murray, E. A.
Affiliations
National Institutes of Health (US)
Venue
The Journal of Neuroscience
Published
2008-08-13
Volume
28
Issue
33
Pages
8338-8343
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2046214338
Cited by
148
References
27
Citations by year
2026: 4 · 2025: 5 · 2024: 6 · 2023: 4 · 2022: 11 · 2021: 6 · 2020: 7 · 2019: 11 · 2018: 10 · 2017: 4 · 2016: 10 · 2015: 10 · 2014: 10 · 2013: 9 · 2012: 10
FWCI
5.17
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Soochow University
  • National Institutes of Health (Z99 MH999999)
  • National Institute of Mental Health
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
amygdala, orbitofrontal cortex, lesion studies, non-human primates, stimulus-reward associations, error-based learning, reward contingency, choice behavior, neural basis of learning
MeSH terms
Amygdala, Animals, Choice Behavior, Frontal Lobe, Macaca mulatta, Male, Photic Stimulation, Reversal Learning, Prefrontal Cortex

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