Symptoms of hyperactivity and inattention can mediate deficits of postural stability in developmental dyslexia
| Autor: | Caroline Witton, Joel B. Talcott, Kim Rochelle |
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| Rok vydání: | 2008 |
| Předmět: |
Adult
medicine.medical_specialty Neurology Adolescent Audiology behavioral disciplines and activities Developmental psychology Dyslexia Young Adult mental disorders medicine Humans Attention deficit hyperactivity disorder Attention Postural Balance Psychomotor Agitation Balance (ability) Analysis of Variance General Neuroscience Cognition medicine.disease Comorbidity Biomechanical Phenomena Attention Deficit Disorder with Hyperactivity Postural stability Developmental dyslexia Psychology psychological phenomena and processes |
| Zdroj: | Experimental Brain Research. 192:627-633 |
| ISSN: | 1432-1106 0014-4819 |
| DOI: | 10.1007/s00221-008-1568-5 |
| Popis: | Developmental dyslexia is a reading disorder associated with impaired postural control. However, such deficits are also found in attention deficit hyperactivity disorder (ADHD), which is present in a substantial subset of dyslexia diagnoses. Very few studies of balance in dyslexia have assessed ADHD symptoms, thereby motivating the hypothesis that such measures can account for the group differences observed. In this study, we assessed adults with dyslexia and similarly aged controls on a battery of cognitive, literacy and attention measures, alongside tasks of postural stability. Displacements of centre of mass to perturbations of posture were measured in four experimental conditions using digital optical motion capture. The largest group differences were obtained in conditions where cues to the support surface were reduced. Between-group differences in postural sway and in sway variability were largely accounted for by co-varying hyperactivity and inattention ratings, however. These results therefore suggest that postural instability in dyslexia is more strongly associated with symptoms of ADHD than to those specific to reading impairment. |
| Databáze: | OpenAIRE |
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