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Functional brain basis of hypnotizability.

Fumiko Hoeft1, John D E Gabrieli, Susan Whitfield-Gabrieli

  • 1Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA.

Archives of General Psychiatry
|October 3, 2012
PubMed
Summary
This summary is machine-generated.

Hypnotizability is linked to enhanced brain connectivity between executive control regions and salience networks. This study reveals specific neural pathways in the dorsolateral prefrontal cortex and dorsal anterior cingulate cortex that may explain differences in hypnotic ability.

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Neuroimaging

Background:

  • Hypnotic suggestion effectively manages pain and anxiety by modulating brain activity.
  • The precise neural networks governing hypnotizability remain largely unknown.
  • Focused hypnotic concentration serves as a model for brain control over sensation and behavior.

Purpose of the Study:

  • To investigate the neural basis of individual differences in hypnotizability.
  • To identify specific brain networks associated with high and low hypnotizability.

Main Methods:

  • A cross-sectional neuroimaging study involving 24 adults (12 high, 12 low hypnotizability).
  • Utilized functional MRI (fMRI) to assess resting-state functional connectivity (default-mode, salience, executive-control networks).
  • Employed structural MRI and diffusion tensor imaging to evaluate brain structure and white matter integrity.

Main Results:

  • Individuals with high hypnotizability exhibited greater functional connectivity between the left dorsolateral prefrontal cortex (executive control) and the salience network.
  • Seed-based analysis confirmed stronger functional coupling between the dorsal anterior cingulate cortex and the dorsolateral prefrontal cortex in highly hypnotizable individuals.
  • These functional connectivity differences were independent of structural variations in gray/white matter volume or white matter microstructure.

Conclusions:

  • Altered functional connectivity in the dorsolateral prefrontal cortex and dorsal anterior cingulate cortex is a potential neural basis for hypnotizability.
  • Future research should explore dynamic network interactions during hypnotic states.