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Extinction Training During the Reconsolidation Window Prevents Recovery of Fear
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Extinction memories: putting learning into context.

Nikolai Axmacher1, Daniel Pacheco-Estefan2, Antoine Bouyeure3

  • 1Center for Studies of Psychological Application and School of Psychology, South China Normal University, Guangzhou 510631, China; Department of Neuropsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, Bochum 44801, Germany.

Trends in Cognitive Sciences
|January 9, 2026
PubMed
Summary
This summary is machine-generated.

Fear memories generalize, but extinction learning is context-specific. Neural patterns for extinction contexts are distinct, suggesting they function like episodic memories, impacting memory system classifications.

Keywords:
contextepisodic memoryextinction learningfear conditioningmemory systemsrepresentational similarity analysis

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Memory Research

Background:

  • Fear memories typically generalize across similar contexts.
  • Extinction learning, the process of reducing fear, is known to be highly context-dependent.
  • Understanding the neural basis of context-dependency in memory is crucial for therapeutic interventions.

Purpose of the Study:

  • To investigate the neural representations of fear acquisition versus extinction contexts.
  • To determine if extinction contexts are represented distinctly from acquisition contexts.
  • To explore the implications of these findings for memory system taxonomies.

Main Methods:

  • Utilized representational similarity analysis (RSA) on neural data.
  • Compared neural representations of contexts during fear acquisition and extinction learning phases.
  • Analyzed the distinctiveness of neural patterns associated with different contexts.

Main Results:

  • Neural representations of extinction contexts were found to be significantly more distinct than those of fear acquisition contexts.
  • This increased distinctiveness suggests a unique encoding process for extinction contexts.
  • The findings align with characteristics of episodic memory representations.

Conclusions:

  • Extinction learning's context-dependency is reflected in distinct neural representations.
  • These representations share similarities with episodic memories, challenging existing memory system classifications.
  • Further research is needed to fully integrate these findings into memory theory.