Functional neuroimaging in post-traumatic stress disorder

Israel Liberzon, Sarah N. Garfinkel

Research output: Chapter in Book/Report/Conference proceedingChapter

12 Scopus citations

Abstract

Neuroimaging provides a powerful means to understand the mechanisms that mediate emotional processing in healthy individuals as well as the dysregulation of these processes in post-traumatic stress disorder (PTSD). Reviewed are neuroimaging findings in PTSD, with a focus on studies utilizing symptom provocation, cognitive activation, and functional connectivity. These studies highlight the role of the medial prefrontal cortex (mPFC), insula, amygdala, sublenticular extended amygdala (SLEA), and hippocampus in mediating symptom formation in PTSD. In addition, new and emerging foci in neuroimaging research relevant to PTSD involve psychological processes like fear conditioning, habituation, extinction recall; cognitive-emotional interactions; and self-related and social-emotional processing. Findings linking neurocircuitry subserving these processes to the abnormalities associated with PTSD are highlighted, suggesting that the mPFC is implicated in a number of these processes. It is proposed that the mPFC plays a role in the contextualization of stimuli, and dysregulation of contextualization processes might play a key role in the generation of PTSD symptoms.

Original languageEnglish (US)
Title of host publicationPost-Traumatic Stress Disorder
Subtitle of host publicationBasic Science and Clinical Practice
PublisherHumana Press
Pages297-317
Number of pages21
ISBN (Print)9781603273282
DOIs
StatePublished - Dec 1 2009

Keywords

  • Contextualization
  • PTSD
  • emotional appraisal
  • fMRI
  • fear conditioning
  • mPFC
  • neuroimaging
  • self-related processing

ASJC Scopus subject areas

  • Medicine(all)

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