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Top-Down Modulations from Dorsal Stream in Lexical Recognition: An Effective Connectivity fMRI Study
Deng, Yuan1; Guo, Ruifang2,3; Ding, Guosheng2; Peng, Danling2; Deng, Y (reprint author), Chinese Acad Sci, Key Lab Behav Sci, Inst Psychol, Beijing, Peoples R China.
2012-03-13
发表期刊PLOS ONE
ISSN1932-6203
文章类型Article
卷号7期号:3
产权排序1
摘要Both the ventral and dorsal visual streams in the human brain are known to be involved in reading. However, the interaction of these two pathways and their responses to different cognitive demands remains unclear. In this study, activation of neural pathways during Chinese character reading was acquired by using a functional magnetic resonance imaging (fMRI) technique. Visual-spatial analysis (mediated by the dorsal pathway) was disassociated from lexical recognition (mediated by the ventral pathway) via a spatial-based lexical decision task and effective connectivity analysis. Connectivity results revealed that, during spatial processing, the left superior parietal lobule (SPL) positively modulated the left fusiform gyrus (FG), while during lexical processing, the left SPL received positive modulatory input from the left inferior frontal gyrus (IFG) and sent negative modulatory output to the left FG, These findings suggest that the dorsal stream is highly involved in lexical recognition and acts as a top-down modulator for lexical processing.
学科领域Cognitive Psychology
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收录类别SCI
语种英语
项目资助者National Nature Science Foundation of China (NSFC) [31170969, 30870757, 30700232] ; Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT)
项目简介This work was supported by grants from National Nature Science Foundation of China (NSFC, 31170969, 30870757, 30700232) and Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT). The funders had no role in study, design, data collection and analysis, decision to publish, or preparation of the manuscript.
WOS记录号WOS:000303129700054
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文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/13317
专题中国科学院心理健康重点实验室
通讯作者Deng, Y (reprint author), Chinese Acad Sci, Key Lab Behav Sci, Inst Psychol, Beijing, Peoples R China.
作者单位1.Chinese Acad Sci, Key Lab Behav Sci, Inst Psychol, Beijing, Peoples R China
2.Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100875, Peoples R China
3.Changzhi Med Coll, Changzhi, Shanxi, Peoples R China
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Deng, Yuan,Guo, Ruifang,Ding, Guosheng,et al. Top-Down Modulations from Dorsal Stream in Lexical Recognition: An Effective Connectivity fMRI Study[J]. PLOS ONE,2012,7(3).
APA Deng, Yuan,Guo, Ruifang,Ding, Guosheng,Peng, Danling,&Deng, Y .(2012).Top-Down Modulations from Dorsal Stream in Lexical Recognition: An Effective Connectivity fMRI Study.PLOS ONE,7(3).
MLA Deng, Yuan,et al."Top-Down Modulations from Dorsal Stream in Lexical Recognition: An Effective Connectivity fMRI Study".PLOS ONE 7.3(2012).
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