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Imaging psychogenic movement disorders.

Arpan R Mehta1, James B Rowe, Anette E Schrag

  • 1Division of Clinical Neurology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK, arpan.mehta@ndcn.ox.ac.uk.

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This summary is machine-generated.

Neuroimaging reveals that psychogenic movement disorders (PMDs) involve abnormal activity in frontal brain regions. These findings offer insights into the pathophysiology and potential treatments for these complex conditions.

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Area of Science:

  • Neuroscience
  • Neurology
  • Psychiatry

Background:

  • Psychogenic movement disorders (PMDs) lack clear neurobiological understanding and effective treatments.
  • Functional neuroimaging studies are increasingly used to investigate the pathophysiology of functional neurological disorders.

Purpose of the Study:

  • To review methodological approaches for studying neural correlates of functional disorders.
  • To synthesize current hypotheses on the neurobiology of psychogenic paralysis.
  • To examine recent functional neuroimaging findings in PMDs, focusing on frontal lobe activity and its relation to motor control, attention, and emotion.

Main Methods:

  • Review of functional neuroimaging studies examining neural correlates of functional disorders, particularly PMDs.
  • Analysis of hypotheses regarding prefrontal and anterior cingulate cortex involvement.
  • Discussion of research exploring the role of attentional and emotional processes.
  • Examination of studies investigating the sense of agency in PMDs.

Main Results:

  • Functional neuroimaging studies highlight abnormalities in the prefrontal and anterior cingulate cortices in PMDs.
  • Research debates whether frontal areas directly inhibit motor areas or modulate them via attention and emotion.
  • Recent studies explore the neurobiological underpinnings of the lack of agency characteristic of PMDs.

Conclusions:

  • Functional neuroimaging provides valuable insights into the pathophysiology of PMDs.
  • Abnormalities in frontal brain regions are implicated in PMDs.
  • Further research is needed to fully understand the mechanisms and implications of these findings for treatment and the sense of agency.