Prisms throw light on developmental disorders

Prism adaptation, in which the participant adapts to prismatic glasses that deflect vision laterally, is a specific test of cerebellar function. Fourteen dyslexic children (mean age 13.5 years); 14 children with developmental coordination disorder (DCD): 6 of whom had comorbid dyslexia; and 12 contr...

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Bibliographic Details
Published in:Neuropsychologia 2007-01, Vol.45 (8), p.1921-1930
Main Authors: Brookes, Rebecca L., Nicolson, Roderick I., Fawcett, Angela J.
Format: Article
Language:English
Subjects:
Adaptation
Adaptation, Physiological - physiology
Adjustment (to Environment)
Adolescent
Biological and medical sciences
Brain
Case-Control Studies
Cerebellum
Child
Child clinical studies
Children
Comorbidity
DCD
Developmental Disabilities
Disorders of higher nervous function. Focal brain diseases. Central vestibular syndrome and deafness. Brain stem syndromes
Dyslexia
Dyslexia - epidemiology
Dyslexia - physiopathology
Dyslexia - rehabilitation
Female
Humans
Language and communication disorders
Learning
Male
Medical sciences
Motor Skills Disorders - epidemiology
Motor Skills Disorders - rehabilitation
Motor Skills Disorders - therapy
Nervous system (semeiology, syndromes)
Neurological Impairments
Neurology
Perceptual Motor Coordination
Psychology. Psychoanalysis. Psychiatry
Psychomotor Performance - physiology
Psychopathology. Psychiatry
Vision
Visual Perception - physiology
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Summary:Prism adaptation, in which the participant adapts to prismatic glasses that deflect vision laterally, is a specific test of cerebellar function. Fourteen dyslexic children (mean age 13.5 years); 14 children with developmental coordination disorder (DCD): 6 of whom had comorbid dyslexia; and 12 control children matched for age and IQ underwent prism adaptation (assessed by clay throwing accuracy to a 16.7° visual displacement). All 8 DCD children, 5 of the 6 children with comorbid DCD and dyslexia and 10 of the 14 dyslexic children showed an impaired rate of adaptation, thereby providing strong evidence of impaired cerebellar function in DCD and developmental dyslexia. Taken together with other emerging evidence of overlap between developmental disorders, these findings highlight the importance of complementing research on the individual disorders with research on the commonalities between the disorders.
ISSN:0028-3932
1873-3514
DOI:10.1016/j.neuropsychologia.2006.11.019