Letter position coding in attentional dyslexia

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Letter position coding in attentional dyslexia. / Shalev, Lilach; Mevorach, Carmel; Humphreys, Glyn.

In: Neuropsychologia, Vol. 46, No. 8, 01.07.2008, p. 2145-2151.

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@article{7c0e8ff6c82a4cb7a6c17ab5c7e23f16,
title = "Letter position coding in attentional dyslexia",
abstract = "We report data from experiments on orthographic and phonological coding in two patients with attentional dyslexia following bilateral parietal damage. Two experiments required the patients to carry out lexical decisions and we varied whether the nonwords were orthographically or phonologically similar to real words. Experiment 1 showed that the patients were sensitive to the orthographic relations between nonwords and words, as they tended to accept as words nonwords whose letters could migrate within the string to form a word. There were no effects of phonological similarity between the nonwords and the words. Experiment 2 demonstrated that the patients were less likely to accept nonwords as words if the word had to be formed by transposing the first two letters in the string. The data suggest that attentional dyslexics are primarily sensitive to orthographic similarity between words and nonwords, and also that the first letters have privileged coding of their locations, despite the patients being poor at coding letter positions. The implications for theories of visual word recognition are discussed.",
keywords = "location coding, attentional dyslexia, visual word recognition",
author = "Lilach Shalev and Carmel Mevorach and Glyn Humphreys",
year = "2008",
month = jul,
day = "1",
doi = "10.1016/j.neuropsychologia.2008.02.022",
language = "English",
volume = "46",
pages = "2145--2151",
journal = "Neuropsychologia",
issn = "0028-3932",
publisher = "Elsevier",
number = "8",

}

RIS

TY - JOUR

T1 - Letter position coding in attentional dyslexia

AU - Shalev, Lilach

AU - Mevorach, Carmel

AU - Humphreys, Glyn

PY - 2008/7/1

Y1 - 2008/7/1

N2 - We report data from experiments on orthographic and phonological coding in two patients with attentional dyslexia following bilateral parietal damage. Two experiments required the patients to carry out lexical decisions and we varied whether the nonwords were orthographically or phonologically similar to real words. Experiment 1 showed that the patients were sensitive to the orthographic relations between nonwords and words, as they tended to accept as words nonwords whose letters could migrate within the string to form a word. There were no effects of phonological similarity between the nonwords and the words. Experiment 2 demonstrated that the patients were less likely to accept nonwords as words if the word had to be formed by transposing the first two letters in the string. The data suggest that attentional dyslexics are primarily sensitive to orthographic similarity between words and nonwords, and also that the first letters have privileged coding of their locations, despite the patients being poor at coding letter positions. The implications for theories of visual word recognition are discussed.

AB - We report data from experiments on orthographic and phonological coding in two patients with attentional dyslexia following bilateral parietal damage. Two experiments required the patients to carry out lexical decisions and we varied whether the nonwords were orthographically or phonologically similar to real words. Experiment 1 showed that the patients were sensitive to the orthographic relations between nonwords and words, as they tended to accept as words nonwords whose letters could migrate within the string to form a word. There were no effects of phonological similarity between the nonwords and the words. Experiment 2 demonstrated that the patients were less likely to accept nonwords as words if the word had to be formed by transposing the first two letters in the string. The data suggest that attentional dyslexics are primarily sensitive to orthographic similarity between words and nonwords, and also that the first letters have privileged coding of their locations, despite the patients being poor at coding letter positions. The implications for theories of visual word recognition are discussed.

KW - location coding

KW - attentional dyslexia

KW - visual word recognition

U2 - 10.1016/j.neuropsychologia.2008.02.022

DO - 10.1016/j.neuropsychologia.2008.02.022

M3 - Article

C2 - 18420233

VL - 46

SP - 2145

EP - 2151

JO - Neuropsychologia

JF - Neuropsychologia

SN - 0028-3932

IS - 8

ER -