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Neuropsychological function and memory suppression in conversion disorder.

Laura B Brown1, Timothy R Nicholson, Selma Aybek

  • 1Section of Cognitive Neuropsychiatry, Institute of Psychiatry, King's College, London, UK.

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|April 16, 2013
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Summary
This summary is machine-generated.

Conversion disorder (CD) patients show executive and memory function deficits. However, this study found no evidence of altered memory suppression, challenging psychodynamic repression theories.

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Area of Science:

  • Neuroscience
  • Psychology
  • Psychiatry

Background:

  • Conversion disorder (CD) presents neurological symptoms without a clear neurological cause, often attributed to psychological factors.
  • Current theories suggest impaired frontal lobe control over motor/sensory systems.
  • Psychodynamic theories propose repression of stressful memories, but empirical testing is limited.

Purpose of the Study:

  • To investigate neuropsychological functioning in CD patients, focusing on executive and memory abilities.
  • To examine memory suppression mechanisms using a directed forgetting task.
  • To test psychodynamic theories regarding repressed memories in CD.

Main Methods:

  • Administered a comprehensive neuropsychological test battery to 21 CD patients and 36 healthy controls.
  • Utilized a directed forgetting task (DFT) with emotionally varied words in a subgroup (11 patients, 28 controls).
  • Analyzed executive function, memory recall (auditory-verbal and autobiographical), and directed forgetting effects.

Main Results:

  • CD patients exhibited deficits in executive function and auditory-verbal memory compared to controls.
  • Executive deficits were partially influenced by differences in IQ, anxiety, and mood.
  • No significant differences in directed forgetting or emotional valence effects were observed, with patients recalling fewer words overall.

Conclusions:

  • The study provides limited evidence for executive and memory impairments in Conversion Disorder.
  • Findings do not support psychodynamic theories of repression as altered memory suppression was not detected.
  • Further research is needed to understand the neuropsychological profile of CD patients.