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Visual Dysfunction in Chinese Children With Developmental Dyslexia: Magnocellular-Dorsal Pathway Deficit or Noise Exclusion Deficit?

文献类型：期刊论文

作者Ji, Yuzhu1,2; Bi, Hong-Yan1,2
刊名FRONTIERS IN PSYCHOLOGY
出版日期2020-06-05
卷号11页码:11
关键词developmental dyslexia magnocellular theory noise exclusion Chinese children visual dysfunction
ISSN号1664-1078
DOI10.3389/fpsyg.2020.00958
通讯作者Bi, Hong-Yan(bihy@psych.ac.cn)
英文摘要Many studies have suggested that children with developmental dyslexia (DD) not only show phonological deficit but also have difficulties in visual processing, especially in non-alphabetic languages such as Chinese. However, mechanisms underlying this impairment in vision are still unclear. Visual magnocellular deficit theory suggests that the difficulties in the visual processing of dyslexia are caused by the dysfunction of the magnocellular system. However, some researchers have pointed out that previous studies supporting the magnocellular theory did not control for the role of "noise". The visual processing difficulties of dyslexia might be related to the noise exclusion deficit. The present study aims to examine these two possible explanations via two experiments. In experiment 1, we recruited 26 Chinese children with DD and 26 chronological age-matched controls (CA) from grades 3 to 5. We compared the Gabor contrast sensitivity between the two groups in high-noise and low-noise conditions. Results showed a significant between-group difference in contrast sensitivity in only the high-noise condition. In experiment 2, we recruited another 29 DD and 29 CA and compared the coherent motion/form sensitivity in the high- and low-noise conditions. Results also showed that DD exhibited lower coherent motion and form sensitivities than CA in the high-noise condition, whereas no evidence was observed that the group difference was significant in the low-noise condition. These results suggest that Chinese children with dyslexia have noise exclusion deficit, supporting the noise exclusion hypothesis. The present study provides evidence for revealing the visual dysfunction of dyslexia from the Chinese perspective. The nature of the perceptual noise exclusion and the relationship between the two theoretical hypotheses are discussed.
WOS关键词LATERAL GENICULATE-NUCLEUS ; SPATIAL ATTENTION ; PERCEPTUAL NOISE ; COHERENT MOTION ; CONTRAST SENSITIVITY ; DEFECT ; FORM ; IMPAIRMENT ; ENGAGEMENT ; LANGUAGE
资助项目National Natural Science Foundation of China[31671155] ; National Natural Science Foundation of China[31371044]
WOS研究方向Psychology
语种英语
WOS记录号WOS:000542991100001
出版者FRONTIERS MEDIA SA
资助机构National Natural Science Foundation of China
源URL[http://ir.psych.ac.cn/handle/311026/32141]  
专题心理研究所_中国科学院行为科学重点实验室
通讯作者Bi, Hong-Yan
作者单位1.Chinese Acad Sci, CAS Key Lab Behav Sci, Ctr Brain Sci & Learning Difficulties, Inst Psychol, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Dept Psychol, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Ji, Yuzhu,Bi, Hong-Yan. Visual Dysfunction in Chinese Children With Developmental Dyslexia: Magnocellular-Dorsal Pathway Deficit or Noise Exclusion Deficit?[J]. FRONTIERS IN PSYCHOLOGY,2020,11:11.
APA Ji, Yuzhu,&Bi, Hong-Yan.(2020).Visual Dysfunction in Chinese Children With Developmental Dyslexia: Magnocellular-Dorsal Pathway Deficit or Noise Exclusion Deficit?.FRONTIERS IN PSYCHOLOGY,11,11.
MLA Ji, Yuzhu,et al."Visual Dysfunction in Chinese Children With Developmental Dyslexia: Magnocellular-Dorsal Pathway Deficit or Noise Exclusion Deficit?".FRONTIERS IN PSYCHOLOGY 11(2020):11.

入库方式： OAI收割

来源：心理研究所

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