A dynamic causal modeling analysis of the effective connectivities underlying top-down letter processing
文献类型：期刊论文
| 作者 | Liu, Jiangang2; Li, Jun3; Rieth, Cory A.4; Huber, David E.4; Tian, Jie1,3 ; Lee, Kang4,5
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| 刊名 | NEUROPSYCHOLOGIA
 |
| 出版日期 | 2011-04-01 |
| 卷号 | 49期号:5页码:1177-1186 |
| 关键词 | Letter processing Word processing Top-down processing fMRI Dynamic causal modeling |
| 英文摘要 | The present study employed dynamic causal modeling to investigate the effective functional connectivity between regions of the neural network involved in top-down letter processing. We used an illusory letter detection paradigm in which participants detected letters while viewing pure noise images. When participants detected letters, the response of the right middle occipital gyrus (MOG) in the visual cortex was enhanced by increased feed-backward connectivity from the left inferior frontal gyrus (IFG). In addition, illusory letter detection increased feed-forward connectivity from the right MOG to the left inferior parietal lobules. Originating in the left IFG, this top-down letter processing network may facilitate the detection of letters by activating letter processing areas within the visual cortex. This activation in turns may highlight the visual features of letters and send letter information to activate the associated phonological representations in the identified parietal region. (C) 2011 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Social Sciences ; Life Sciences & Biomedicine |
| 类目[WOS] | Behavioral Sciences ; Neurosciences ; Psychology, Experimental |
| 研究领域[WOS] | Behavioral Sciences ; Neurosciences & Neurology ; Psychology |
| 关键词[WOS] | WORD FORM AREA ; FUSIFORM FACE AREA ; CORTICAL REGIONS ; VENTRAL STREAM ; MENTAL-IMAGERY ; VISUAL-CORTEX ; HUMAN BRAIN ; BOTTOM-UP ; RECOGNITION ; PERCEPTION |
| 收录类别 | SCI ; SSCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000290649200042 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/3899]  |
| 专题 | 自动化研究所_中国科学院分子影像重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Automat, Beijing 100190, Peoples R China 2.Beijing Jiaotong Univ, Sch Comp & Informat Technol, Dept Biomed Engn, Beijing 100044, Peoples R China 3.Xidian Univ, Sch Life Sci & Technol, Xian 710071, Peoples R China 4.Univ Calif San Diego, San Diego, CA 92103 USA 5.Univ Toronto, Toronto, ON M5S 1A1, Canada |
| 推荐引用方式 GB/T 7714 | Liu, Jiangang,Li, Jun,Rieth, Cory A.,et al. A dynamic causal modeling analysis of the effective connectivities underlying top-down letter processing[J]. NEUROPSYCHOLOGIA,2011,49(5):1177-1186. |
| APA | Liu, Jiangang,Li, Jun,Rieth, Cory A.,Huber, David E.,Tian, Jie,&Lee, Kang.(2011).A dynamic causal modeling analysis of the effective connectivities underlying top-down letter processing.NEUROPSYCHOLOGIA,49(5),1177-1186. |
| MLA | Liu, Jiangang,et al."A dynamic causal modeling analysis of the effective connectivities underlying top-down letter processing".NEUROPSYCHOLOGIA 49.5(2011):1177-1186. |
入库方式： OAI收割
来源：自动化研究所
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