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Related Experiment Videos

Neuroimaging in psychopathy.

Saxby Pridmore1, Amber Chambers, Milford McArthur

  • 1Discipline of Psychiatry, University of Tasmania, Australia. spridmore@iprimus.com.au

The Australian and New Zealand Journal of Psychiatry
|September 20, 2005
PubMed
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Neuroimaging reveals frontal and temporal lobe dysfunction in psychopathy, though structural findings are inconsistent. Further research is needed to understand this complex condition.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Genetics

Background:

  • The biological underpinnings of psychopathy are not fully understood.
  • Genetic factors and serotonin system dysfunction are implicated.
  • Neuroimaging offers insights into the neural correlates of psychopathy.

Purpose of the Study:

  • To review neuroimaging studies from the past decade.
  • To elucidate the contribution of neuroimaging to understanding psychopathy.

Main Methods:

  • Literature search using PubMed and relevant keywords.
  • Inclusion of studies on psychopathy, antisocial personality disorder, and violence.
  • Review of structural and functional neuroimaging studies.

Main Results:

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  • Structural studies: inconsistent findings on prefrontal grey matter, hippocampal volume, and white matter.
  • Functional studies: reduced frontal and temporal lobe perfusion/metabolism.
  • Observed functional abnormalities during conditioning, inhibition, and emotional processing tasks.

Conclusions:

  • Functional neuroimaging indicates frontal and temporal lobe dysfunction in psychopathy.
  • Challenges exist in case selection and control group definition.
  • Multifactorial influences (genetics, environment, context) affect psychopathic responses.