Hypnotic induction decreases anterior default mode activity

  • McGeown W
  • Mazzoni G
  • Venneri A
 et al. 
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Abstract

The 'default mode' network refers to cortical areas that are active in the absence of goal-directed activity. In previous studies, decreased activity in the 'default mode' has always been associated with increased activation in task-relevant areas. We show that the induction of hypnosis can reduce anterior default mode activity during rest without increasing activity in other cortical regions. We assessed brain activation patterns of high and low suggestible people while resting in the fMRI scanner and while engaged in visual tasks, in and out of hypnosis. High suggestible participants in hypnosis showed decreased brain activity in the anterior parts of the default mode circuit. In low suggestible people, hypnotic induction produced no detectable changes in these regions, but instead deactivated areas involved in alertness. The findings indicate that hypnotic induction creates a distinctive and unique pattern of brain activation in highly suggestible subjects. © 2009 Elsevier Inc. All rights reserved.

Author-supplied keywords

  • Consciousness
  • Default mode
  • Frontal cortex
  • Functional magnetic resonance imaging (fMRI)
  • Hypnosis
  • Neuroimaging
  • State
  • Suggestion
  • Trance

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