Cited by 198Memory and Neural MechanismsNeural and Behavioral Psychology StudiesNeurotransmitter Receptor Influence on Behavior

Differential Involvement of the Basolateral Amygdala and Mediodorsal Thalamus in Instrumental Action Selection

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Ostlund, Sean B., Balleine, Bernard W.·2008·The Journal of Neuroscience

Abstract

Although it has been shown that the basolateral amygdala (BLA) and the mediodorsal thalamus (MD) are critical for goal-directed instrumental performance, much remains unknown about the respective contributions of these structures to action selection. The current study assessed the effects of post-training BLA and MD lesions on several tests of instrumental action selection. We found that MD damage disrupted the influence of pavlovian cues over action selection but left intact rats' ability to select actions based on either the expected value or the discriminative stimulus properties of the outcome. In contrast, BLA lesions impaired performance on all three tests of action selection. Because both lesion types disrupted the influence of cues that signal reward over instrumental performance, we then investigated the involvement of these structures in pavlovian contingency learning using a task in which the predictive status of one of two cues is degraded by delivering its outcome noncontingently during the intertrial interval. As expected, the sham group selectively suppressed their conditioned approach performance to the cue that no longer signaled its outcome but continued to respond to the control stimulus. In contrast, both lesioned groups were impaired on this task. Interestingly, whereas the MD group displayed a nonspecific reduction in responding to both cues, the BLA group continued to show high levels of responding to both cues as if their performance was completely insensitive to this contingency manipulation. These findings demonstrate that the BLA and MD make important yet distinct contributions to instrumental action selection.

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Authors
Ostlund, S. B., & Balleine, B. W.
Affiliations
University of California, Los Angeles (US)
Venue
The Journal of Neuroscience
Published
2008-04-23
Volume
28
Issue
17
Pages
4398-4405
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2002961865
Cited by
198
References
38
Citations by year
2026: 5 · 2025: 7 · 2024: 8 · 2023: 12 · 2022: 12 · 2021: 11 · 2020: 7 · 2019: 10 · 2018: 11 · 2017: 14 · 2016: 12 · 2015: 15 · 2014: 8 · 2013: 16 · 2012: 10
FWCI
6.72
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Public Health Service (NIMH 56446)
  • National Institute of Mental Health (R29MH056446, 56446)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
basolateral amygdala, mediodorsal thalamus, classical conditioning, reward prediction, lesion studies, rats
MeSH terms
Amygdala, Animals, Conditioning, Operant, Female, Motivation, Reward, Rats, Long-Evans, Mediodorsal Thalamic Nucleus, Rats

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