Magnocellular-dorsal pathway function is associated with orthographic but not phonological skill: fMRI evidence from skilled Chinese readers

	Magnocellular-dorsal pathway function is associated with orthographic but not phonological skill: fMRI evidence from skilled Chinese readers
	Qian, Yi 1,2; Deng, Yuan1 ; Zhao, Jing1,2 ; Bi, Hong-Yan1
摘要	Numerous studies have shown that magnocellular-dorsal (MD) pathway function is highly associated with reading ability, which is mostly indexed by phonological skill in alphabetic languages. However, it is less clear how MD pathway function influences phonological skill. As a logographic language, Chinese does not follow grapheme-phoneme correspondence rules, and thus provides a tool for delineating the effects of orthographic and phonological processing on reading. The current study used functional magnetic resonance imaging (fMRI) to measure MD pathway function in a coherent motion detection task for readers skilled in Chinese. A series of tests was used to assess participants' reading abilities, including orthographic and phonological processing skills. Results showed that several cortical regions of the MD pathway, including bilateral middle temporal visual motion areas (MT+) and the right posterior parietal cortex (PPC), were activated during the coherent motion detection task. Moreover, the activation was positively correlated with rapid naming speed, and greater activation in the left MT+ was associated with superior fluency and reduced accuracy in reading, suggesting that this pathway is also involved in modulating the speed of visual processing during reading. The most important finding was that activation of the right PPC was associated with orthographic awareness, but MD pathway activation was not related to phonological awareness. The results suggest that the MD pathway is highly associated with orthographic processing, which in turn influences more general aspects of reading skill. (C) 2015 Elsevier Ltd. All rights reserved.
关键词	Magnocellular-dorsal pathway Chinese reading Reading ability Orthographic skill Phonological skill
	2015-05-01
语种	英语
发表期刊	NEUROPSYCHOLOGIA
ISSN	0028-3932
卷号	71 期号:0 页码:84-90
期刊论文类型	Article
收录类别	SSCI
WOS记录号	WOS:000355034700009
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.psych.ac.cn/handle/311026/13370
专题	中国科学院行为科学重点实验室
作者单位	1.Chinese Acad Sci, Inst Psychol, Key Lab Behav Sci, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院行为科学重点实验室
推荐引用方式 GB/T 7714	Qian, Yi,Deng, Yuan,Zhao, Jing,et al. Magnocellular-dorsal pathway function is associated with orthographic but not phonological skill: fMRI evidence from skilled Chinese readers[J]. NEUROPSYCHOLOGIA,2015,71(0):84-90.
APA	Qian, Yi,Deng, Yuan,Zhao, Jing,&Bi, Hong-Yan.(2015).Magnocellular-dorsal pathway function is associated with orthographic but not phonological skill: fMRI evidence from skilled Chinese readers.NEUROPSYCHOLOGIA,71(0),84-90.
MLA	Qian, Yi,et al."Magnocellular-dorsal pathway function is associated with orthographic but not phonological skill: fMRI evidence from skilled Chinese readers".NEUROPSYCHOLOGIA 71.0(2015):84-90.

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