Cited by 277Memory and Neural MechanismsNeural and Behavioral Psychology StudiesNeurotransmitter Receptor Influence on Behavior

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Active Avoidance Learning Requires Prefrontal Suppression of Amygdala-Mediated Defensive Reactions

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Moscarello, Justin M., LeDoux, Joseph E.·2013·The Journal of Neuroscience

Abstract

Signaled active avoidance (AA) paradigms train subjects to prevent an aversive outcome by performing a learned behavior during the presentation of a conditioned cue. This complex form of conditioning involves pavlovian and instrumental components, which produce competing behavioral responses that must be reconciled for the subject to successfully avoid an aversive stimulus. In signaled AA paradigm for rat, we tested the hypothesis that the instrumental component of AA training recruits infralimbic prefrontal cortex (ilPFC) to inhibit central amygdala (CeA)-mediated Pavlovian reactions. Pretraining lesions of ilPFC increased conditioned freezing while causing a corresponding decrease in avoidance; lesions of CeA produced opposite effects, reducing freezing and facilitating avoidance behavior. Pharmacological inactivation experiments demonstrated that ilPFC is relevant to both acquisition and expression phases of AA learning. Inactivation experiments also revealed that AA produces an ilPFC-mediated diminution of pavlovian reactions that extends beyond the training context, even when the conditioned stimulus is presented in an environment that does not allow the avoidance response. Finally, injection of a protein synthesis inhibitor into either ilPFC or CeA impaired or facilitated AA, respectively, showing that avoidance training produces two opposing memory traces in these regions. These data support a model in which AA learning recruits ilPFC to inhibit CeA-mediated defense behaviors, leading to a robust suppression of freezing that generalizes across environments. Thus, ilPFC functions as an inhibitory interface, allowing instrumental control over an aversive outcome to attenuate the expression of freezing and other reactions to conditioned threat.

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Crossref · 10.1523/jneurosci.2596-12.2013

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  1. Pavlov IP (1927) Conditioned reflexes (Routledge and Kegan Paul, London).

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Metadata

Authors
Moscarello, J. M., & LeDoux, J. E.
Affiliations
  • New York University (US)
  • Nathan Kline Institute for Psychiatric Research (US)
Corresponding author
Moscarello, Justin M.
Venue
The Journal of Neuroscience
Published
2013-02-27
Volume
33
Issue
9
Pages
3815-3823
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2001417852
Cited by
277
References
38
Citations by year
2026: 18 · 2025: 18 · 2024: 30 · 2023: 14 · 2022: 9 · 2021: 21 · 2020: 18 · 2019: 30 · 2018: 28 · 2017: 19 · 2016: 22 · 2015: 20 · 2014: 19 · 2013: 11
FWCI
13.11
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
Funders
  • National Institute of Mental Health (R01MH038774, F32MH094061)
  • National Institute on Drug Abuse (R01DA029053, R56DA029053)
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
infralimbic cortex, central amygdala, instrumental avoidance, protein synthesis inhibition, avoidance memory
MeSH terms
Amygdala, Analysis of Variance, Animals, Anisomycin, Avoidance Learning, Conditioning, Classical, Conditioning, Operant, Cues, Electrolysis, Male, Muscimol, Neural Pathways, Protein Synthesis Inhibitors, Proto-Oncogene Proteins c-fos, Rats, Sprague-Dawley, Prefrontal Cortex, GABA Agonists, Rats

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