Neurophysiological and Behavioural Correlates of Coherent Motion Perception in Dyslexia

被引:9
作者
Taroyan, Naira A. [1 ]
Nicolson, Roderick I. [2 ]
Buckley, David [3 ]
机构
[1] Sheffield Hallam Univ, Dept Psychol, Sheffield S10 2BP, S Yorkshire, England
[2] Univ Sheffield, Dept Psychol, Western Bank, Sheffield S10 2TN, S Yorkshire, England
[3] Univ Sheffield, Acad Unit Ophthalmol & Orthopt, Sheffield S10 2TN, S Yorkshire, England
关键词
dyslexia; coherent motion; event-related potentials; behavioural response; EVOKED-POTENTIALS; VISUAL-MOTION; SENSITIVITY; PERFORMANCE; CHILDREN; P300;
D O I
10.1002/dys.435
中图分类号
G76 [特殊教育];
学科分类号
040109 ;
摘要
Coherent motion perception was tested in nine adolescents with dyslexia and 10 control participants matched for age and IQ using low contrast stimuli with three levels of coherence (10%, 25% and 40%). Event-related potentials (ERPs) and behavioural performance data were obtained. No significant between-group differences were found in performance accuracy and response latencies of correct responses, for early (P1, N1, and P2) or late (P3) ERP peaks. However, attenuated early ERPs in the 10% coherent condition correlated significantly with lower performance accuracy (r = -.66) and with the magnitude of literacy deficit (r = -.46). Copyright (C) 2011 John Wiley & Sons, Ltd.
引用
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页码:282 / 290
页数:9
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