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WORD-FORM DYSLEXIA

WORD-FORM DYSLEXIA Brain (1980), 103, 99-112 by ELIZABETH K. WARRINGTON and TIM SHALLICE1 (From the National Hospital, Queen Square, London fVCl) INTRODUCTION 'SPELLIN G dyslexia' is a phenomenon known to neurologists both as a variety of acquired dyslexia and as a component element of the syndrome of simultan- agnosia. Patients are described as being able to read only 'letter-by-letter', so that the whole word is reconstructed from the (auditory) names of the letters, presumably relying on their intact spelling skills: literally CA T spells 'cat'. Reading becomes very slow and laborious and attempts to read more quickly are vitiated by numerous paralexic errors (Wolpert, 1924; Kinsbourne and Warring- ton, 1962). To encompass the co-occurrence of spelling dyslexia and the impair- ment of the perception of complex scenes Wolpert introduced the concept of simultanagnosia—the failure to apprehend the whole though the parts are well recognized. He clearly regarded these deficits as being at the level of compre- hension ; in the case of complex scenes, individual features could be identified but not the significance of the whole picture; similarly in the case of words, individual letters could be identified but not the whole word. Clinical and autopsy evidence suggests that simultanagnosia occurs http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Brain Oxford University Press

WORD-FORM DYSLEXIA

WARRINGTON, ELIZABETH K.; SHALLICE, TIM
Brain , Volume 103 (1) – Mar 1, 1980
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Publisher
Oxford University Press
Copyright
© Oxford University Press
ISSN
0006-8950
eISSN
1460-2156
DOI
10.1093/brain/103.1.99
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Abstract

Brain (1980), 103, 99-112 by ELIZABETH K. WARRINGTON and TIM SHALLICE1 (From the National Hospital, Queen Square, London fVCl) INTRODUCTION 'SPELLIN G dyslexia' is a phenomenon known to neurologists both as a variety of acquired dyslexia and as a component element of the syndrome of simultan- agnosia. Patients are described as being able to read only 'letter-by-letter', so that the whole word is reconstructed from the (auditory) names of the letters, presumably relying on their intact spelling skills: literally CA T spells 'cat'. Reading becomes very slow and laborious and attempts to read more quickly are vitiated by numerous paralexic errors (Wolpert, 1924; Kinsbourne and Warring- ton, 1962). To encompass the co-occurrence of spelling dyslexia and the impair- ment of the perception of complex scenes Wolpert introduced the concept of simultanagnosia—the failure to apprehend the whole though the parts are well recognized. He clearly regarded these deficits as being at the level of compre- hension ; in the case of complex scenes, individual features could be identified but not the significance of the whole picture; similarly in the case of words, individual letters could be identified but not the whole word. Clinical and autopsy evidence suggests that simultanagnosia occurs

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Brain – Oxford University Press

Published: Mar 1, 1980

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