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ERIC Number: EJ818388
Record Type: Journal
Publication Date: 2008-Dec
Pages: 9
Abstractor: As Provided
Reference Count: 0
ISSN: ISSN-0093-934X
Hemispheric Dissociation and Dyslexia in a Computational Model of Reading
Monaghan, Padraic; Shillcock, Richard
Brain and Language, v107 n3 p185-193 Dec 2008
There are several causal explanations for dyslexia, drawing on distinctions between dyslexics and control groups at genetic, biological, or cognitive levels of description. However, few theories explicitly bridge these different levels of description. In this paper, we review a long-standing theory that some dyslexics' reading impairments are due to impairments in hemispheric transfer. We test this theory in a computational model of reading, implementing anatomical features of the visual system. We demonstrate that, when callosal transfer is impaired, the model reads nonwords as well as an unimpaired model, but reads exception words poorly: a pattern of behaviour similar to surface dyslexia. This computational modelling provides a causal link between brain-based theories of dyslexia to cognitive-level theories that refer specifically to phonological impairments within the reading system. (Contains 1 table and 4 figures.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A