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Visual attention and motor learning in dyslexics and controls

Askamp, J. (2010) Visual attention and motor learning in dyslexics and controls.

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Abstract:Besides linguistic problems, visual, auditory and motor impairments have been found in dyslexia. Several theories have been formulated to explain the mechanisms underlying these problems. In this study, we assessed two dominating hypotheses, the magnocellular theory and the cerebellar deficit hypothesis. In earlier studies, visual serial search was shown to be impaired in dyslexia, which was suggested to indicate magnocellular dysfunctioning, whereas sequence learning was shown to be impaired in dyslexics in agreement with the cerebellar deficit hypothesis. In the present study, we compared dyslexics and controls on visual search and discrete sequence production (DSP) by means of behavioral and ERP measures. Dyslexics were not found to be poorer than controls on each of these tests. This indicates that in our dyslexics, we did not find any support for either of the two hypotheses, signifying that linguistic problems are often present without the co-occurrence of sensory or motor impairments.
Item Type:Essay (Master)
Faculty:BMS: Behavioural, Management and Social Sciences
Subject:77 psychology
Programme:Psychology MSc (66604)
Link to this item:http://purl.utwente.nl/essays/60064
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