The amygdala and the neural pathways of fear

Jacek Dbiec, Joseph Ledoux

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Fear and anxiety are evolutionarily developed responses to perceived or anticipated threat. They involve behavioral, autonomic, and endocrine alterations aimed at increasing an organism's chances of survival. Excessive or uncontrolled fear and anxiety may lead to anxiety disorders. Animal and human studies indicate the critical role of the amygdala in adaptive and maladaptive fear. Recent advances elucidating the organization of the neural circuitry and molecular mechanisms of fear provide new insights in normal as well as pathological fear. In this chapter, we review the microcircuitry of the amygdala with a special emphasis on its relevance to fear processing and fear learning. We also discuss recent developments in understanding the basic molecular mechanism of fear. Finally, we address some of the implications of amygdala research for developing novel therapeutic approaches to maladaptive fear and anxiety.

Original languageEnglish (US)
Title of host publicationPost-Traumatic Stress Disorder
Subtitle of host publicationBasic Science and Clinical Practice
PublisherHumana Press
Pages23-38
Number of pages16
ISBN (Print)9781603273282
DOIs
StatePublished - Dec 1 2009

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Keywords

  • Amygdala
  • anxiety
  • extinction
  • fear
  • fear conditioning
  • learning
  • memory
  • memory consolidation
  • memory reconsolidation
  • synaptic plasticity

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Dbiec, J., & Ledoux, J. (2009). The amygdala and the neural pathways of fear. In Post-Traumatic Stress Disorder: Basic Science and Clinical Practice (pp. 23-38). Humana Press. https://doi.org/10.1007/978-1-60327-329-9_2