Top-Down Modulations from Dorsal Stream in Lexical Recognition: An Effective Connectivity fMRI Study
文献类型：期刊论文
| 作者 | Deng, Yuan1 ; Guo, Ruifang2,3; Ding, Guosheng2; Peng, Danling2
|
| 刊名 | PLOS ONE
 |
| 出版日期 | 2012-03-13 |
| 卷号 | 7期号:3 |
| ISSN号 | 1932-6203 |
| 产权排序 | 1 |
| 通讯作者 | Deng, Y (reprint author), Chinese Acad Sci, Key Lab Behav Sci, Inst Psychol, Beijing, Peoples R China. |
| 英文摘要 | 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. |
| 学科主题 | Cognitive psychology |
| 收录类别 | SCI |
| 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. |
| 原文出处 | http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.pone.0033337&representation=PDF |
| 语种 | 英语 |
| WOS记录号 | WOS:000303129700054 |
| 源URL | [http://ir.psych.ac.cn/handle/311026/13317]  |
| 专题 | 心理研究所_中国科学院心理健康重点实验室 |
| 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 |
| 推荐引用方式 GB/T 7714 | 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.(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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来源：心理研究所
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