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Tourette's syndrome and right hemisphere dysfunction

J B Lanser1, W H Van Santen, A Jennekens-Schinkel

  • 1Department of Neurology, Academic Hospital, Leiden, The Netherlands.

The British Journal of Psychiatry : the Journal of Mental Science
|July 1, 1993
PubMed
Summary

Children with Tourette's syndrome (TS) do not show right hemisphere dysfunction, despite previous theories. Neuropsychological tests revealed no evidence supporting this hypothesis in pediatric TS patients.

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Clinical Neurology

Background:

  • Previous research suggested right hemisphere involvement in Tourette's syndrome (TS) due to observed visual-perceptual deficits.
  • These deficits led to hypotheses linking TS to specific neurological lateralization.

Purpose of the Study:

  • To investigate the proposed link between Tourette's syndrome and right hemisphere dysfunction.
  • To compare the neuropsychological profiles of children with TS to those with confirmed right hemisphere lesions.

Main Methods:

  • Neuropsychological examinations were conducted on 16 children diagnosed with Tourette's syndrome.
  • A control group of 16 children with documented right hemisphere lesions underwent the same examinations.

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Main Results:

  • The study found no evidence of right hemisphere dysfunction in children with Tourette's syndrome.
  • Neuropsychological test results for the TS group did not align with the patterns observed in the right hemisphere lesion group.

Conclusions:

  • The findings do not support the hypothesis of right hemisphere dysfunction as a primary deficit in Tourette's syndrome.
  • Further research is needed to understand the underlying neurobiology of visual-perceptual challenges in TS.