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Imaging in posttraumatic stress disorder.

Benjamin L Robinson1, Sukhi S Shergill

  • 1King's College, London, Institute of Psychiatry, UK. benjamin.robinson@kcl.ac.uk

Current Opinion in Psychiatry
|November 20, 2010
PubMed
Summary
This summary is machine-generated.

Neuroimaging studies reveal brain changes in posttraumatic stress disorder (PTSD). Understanding these neural alterations in fear and stress responses can inform new PTSD treatments.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Psychology

Background:

  • Posttraumatic stress disorder (PTSD) diagnosis requires an external stressor alongside typical symptoms.
  • Early research debated PTSD's validity and its common neural underpinnings.
  • Recent neuroimaging advances offer insights into PTSD's neural basis.

Purpose of the Study:

  • To review neuroimaging studies investigating the neural basis of PTSD.
  • To combine imaging data with stress response and fear/extinction learning paradigms.
  • To probe underlying neural changes in individuals with PTSD.

Main Methods:

  • Review of recent neuroimaging literature on PTSD.
  • Assessment of structural brain changes in PTSD (causal vs. secondary).
  • Summarization of neural activation and autonomic nervous system stress responses in PTSD.
  • Examination of neural mechanisms of fear and reward processing in PTSD.

Main Results:

  • Investigated whether structural brain changes in PTSD are primary or secondary.
  • Summarized the relationship between neural activation and autonomic stress responses.
  • Demonstrated altered neural mechanisms underlying fear and reward processing in PTSD.

Conclusions:

  • Enhanced understanding of brain mechanisms in fear and stress responses.
  • Identified alterations in these mechanisms in PTSD.
  • Opened avenues for novel pharmacological PTSD therapies.
  • Revealed neural processes contributing to treatment resistance in PTSD.