Developmental dyslexia
2004; Elsevier BV; Volume: 363; Issue: 9419 Linguagem: Inglês
10.1016/s0140-6736(04)16106-0
ISSN1474-547X
AutoresJean‐François Démonet, Margot J. Taylor, Yves Chaix,
Tópico(s)Language Development and Disorders
ResumoDevelopmental dyslexia, or specific reading disability, is a disorder in which children with normal intelligence and sensory abilities show learning deficits for reading. Substantial evidence has established its biological origin and the preponderance of phonological disorders even though important phenotypic variability and comorbidity have been recorded. Diverse theories have been proposed to account for the cognitive and neurological aspects of dyslexia. Findings of genetic studies show that different loci affect specific reading disability although a direct relation has not been established between symptoms and a given genomic locus. In both children and adults with dyslexia, results of neuroimaging studies suggest defective activity and abnormal connectivity between regions crucial for language functions—eg, the left fusiform gyrus for reading—and changes in brain activity associated with performance improvement after various remedial interventions.
Referência(s)