http://www.cnr.it/ontology/cnr/individuo/prodotto/ID10270

Dyslexia - Cultural diversity and biological unity (Articolo in rivista)

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Dyslexia - Cultural diversity and biological unity (Articolo in rivista) (literal)

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Paulesu E., Démonet J.F., Fazio F., McCrory E., Chanoine V., Brunswick N., Cappa S.F., Cossu G., Habib M., Frith C.D., Frith U. (2001)
Dyslexia - Cultural diversity and biological unity
in Science (N. Y., N.Y.)
(literal)

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Paulesu E., Démonet J.F., Fazio F., McCrory E., Chanoine V., Brunswick N., Cappa S.F., Cossu G., Habib M., Frith C.D., Frith U. (literal)

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Abstract

The recognition of dyslexia as a neurodevelopmental disorder has been hampered by the belief that it is not a specific diagnostic entity because it has variable and culture-specific manifestations. In line with this belief, we found that Italian dyslexics, using a shallow orthography which facilitates reading, performed better on reading tasks than did English and French dyslexics. However, all dyslexics were equally impaired relative to their controls on reading and phonological tasks. Positron emission tomography scans during explicit and implicit reading showed the same reduced activity in a region of the left hemisphere in dyslexics from all three countries, with the maximum peak in the middle temporal gyrus and additional peaks in the inferior and superior temporal gyri and middle occipital gyrus. We conclude that there is a universal neurocognitive basis for dyslexia and that differences in reading performance among dyslexics of different countries are due to different orthographies. (literal)

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