Journal
NEUROPSYCHOLOGIA
Volume 48, Issue 12, Pages 3650-3656Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuropsychologia.2010.08.023
Keywords
Attention deficit hyperacticity disorder; Developmental dyslexia; Hemispheric asymmetry; Spatial neglect; Visuospatial attention
Funding
- University of Auckland [23136]
- Deutsche Forschungsgemeinschaft (DFG) [HA 3285/3-1]
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Visual line bisection is a reliable and valid laterality task that is typically used with patients with acquired brain damage to assess right hemisphere functioning Neurologically normal individuals tend to bisect lines to the left of the objective midline whereas those with right parietal damage bisect lines to the right In this study children with ADHD were matched with children with developmental dyslexia on IQ and gender to test the hypothesis that right hemisphere neurological abnormalities underlie the behavioural deficits observed in these two disorders Line bisection performance was compared between groups as a function of response hand scanning direction and line position In contrast to results typically found with neurologically normal children a rightward bias was found for both clinical groups but to different degrees depending on which hand was used to bisect lines These findings suggest pathology of the corpus callosum and/or the right fronto-parietal cortex (C) 2010 Elsevier Ltd All rights reserved
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