Chapter

Language impairment in amyotrophic lateral sclerosis from an historical review: kana and kanji versus alphabetical languages

Hiroo Ichikawa, Sotaro Hieda, Hideki Ohno, Kenji Ishihara and Mitsuru Kawamura

in Amyotrophic Lateral Sclerosis and the Frontotemporal Dementias

Published on behalf of Oxford University Press

Published in print October 2012 | ISBN: 9780199590674
Published online November 2012 | e-ISBN: 9780191753466 | DOI: http://dx.doi.org/10.1093/med/9780199590674.003.0006
Language impairment in amyotrophic lateral sclerosis from an historical review: kana and kanji versus alphabetical languages

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ALS is a multisystem disorder that involves the motor system and cognitive factors. Language impairment, including PNFA and SD have been overlooked in ALS. Patients with ALS often display writing errors, with dissociation between verb and noun processing in English and dissociated errors between kana and kanji characters in Japanese. The characteristic features of writing errors may reflect the nature of aphasia and underlying brain locations, including hemispheric dominance and frontal or temporal lobe involvement.

Chapter.  5738 words.  Illustrated.

Subjects: Neurology

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