TB4 Lecture 2; Brain areas in conversion disorder

The key implicated areas here are;

  • Dorsolateral PF cortex
  • Hippocampus
  • Frontal cortical regions (IF gyrus)
  • Amygdala
  • Primary somatosensory and motor areas
  • Temporoparietal junction (RIGHT)
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  • Created by: mint75
  • Created on: 22-05-15 18:16
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  • Brain areas implicated in Conversion disorder
    • Inhibition in primary somato-sensory regions
      • Affected and Unaffected limb experiment
        • Indicates active suppression of responses to other parts of the brain
    • Increased activity in dorsolateral prefrontal cortex
    • Decreased hippocampal activity
    • Increased activity in frontal cortical regions (inferior frontal gyrus)
      • Freudian suppression of emotion tasks
        • Suggests suppression of emotion during no-think trials
    • Decreased amygdala activity
      • Freudian suppression of emotion tasks
        • Suggests suppression of emotion during no-think trials
    • Distressing account tasks
    • Distressing emotional accounts tasks
      • Indicates suppression of traumatic memories
        • ALSO indicates emotional dis-inhibition of anxiety
    • Mental representation of body part studies
      • Temporo-parietal junction and supplementary motor area increased activity
        • Stimulation of right temporo-parietal junction and OBE reseach
        • Lack of proprioceptive feedback leads to the perception that the conversion movement is not self generated
      • Indicates highly abnormal mental representations of body parts affected by the disorder
    • Persuasive-ness tasks
      • Temporo-parietal junction and supplementary motor area increased activity
        • Stimulation of right temporo-parietal junction and OBE reseach
        • Lack of proprioceptive feedback leads to the perception that the conversion movement is not self generated
      • Highlights the importance of the TP junction in conceptualising other peoples mental states

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