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Related Experiment Videos

Prisms throw light on developmental disorders.

Rebecca L Brookes1, Roderick I Nicolson, Angela J Fawcett

  • 1Department of Psychology, University of Sheffield, Western Bank, Sheffield S10 2TP, United Kingdom. r.l.brookes@shef.ac.uk

Neuropsychologia
|February 3, 2007
PubMed
Summary

Children with developmental coordination disorder (DCD) and dyslexia show impaired cerebellar function, as evidenced by difficulties in prism adaptation. This suggests shared neurological underpinnings between these developmental disorders.

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Pediatrics

Background:

  • Prism adaptation is a validated measure of cerebellar function.
  • Developmental Coordination Disorder (DCD) and developmental dyslexia are common childhood neurodevelopmental disorders.
  • Emerging evidence suggests potential overlap in the underlying mechanisms of DCD and dyslexia.

Purpose of the Study:

  • To investigate cerebellar function in children with DCD and dyslexia using prism adaptation.
  • To explore the commonalities between DCD and dyslexia by examining shared deficits in cerebellar adaptation.

Main Methods:

  • A prism adaptation task involving clay throwing accuracy to visual displacement was administered.
  • Participants included children with DCD, children with dyslexia, children with comorbid DCD and dyslexia, and age- and IQ-matched controls.

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Main Results:

  • A significant impairment in the rate of prism adaptation was observed in children with DCD and dyslexia.
  • Children with DCD, dyslexia, and comorbid DCD/dyslexia demonstrated deficits in cerebellar function.

Conclusions:

  • Impaired cerebellar function is evident in both DCD and developmental dyslexia.
  • These findings underscore the importance of investigating shared pathways and commonalities across developmental disorders.