Neural correlates of top-down letter processing
文献类型：期刊论文
| 作者 | Liu, Jiangang6; Li, Jun5; Zhang, Hongchuan3; Rieth, Cory A.1; Huber, David E.1; Li, Wu4 ; Lee, Kang1,2; Tian, Jie4,5
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| 刊名 | NEUROPSYCHOLOGIA
 |
| 出版日期 | 2010 |
| 卷号 | 48期号:2页码:636-641 |
| 关键词 | Word processing Letter processing Top-down processing fMRI |
| 英文摘要 | This fMRI study investigated top-down letter processing with an illusory letter detection task. Participants responded whether one of a number of different possible letters was present in a very noisy image. After initial training that became increasingly difficult, they continued to detect letters even though the images consisted of pure noise, which eliminated contamination from strong bottom-up input. For illusory letter detection, greater fMRI activation was observed in several cortical regions. These regions included the precuneus, an area generally involved in top-down processing of objects, and the left superior parietal lobule, an area previously identified with the processing of valid letter and word stimuli. In addition, top-down letter detection also activated the left inferior frontal gyrus, an area that may be involved in the integration of general top-down processing and letter-specific bottom-up processing. These findings suggest that these regions may play a significant role in top-down as well as bottom-up processing of letters and words, and are likely to have reciprocal functional connections to more posterior regions in the word and letter processing network. (C) 2009 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 ; POSTERIOR FUSIFORM ; VISUAL-CORTEX ; WRITTEN WORDS ; ACTIVATION ; FMRI ; PERCEPTION ; SPECIALIZATION ; PSEUDOWORDS ; COGNITION |
| 收录类别 | SCI ; SSCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000274371700033 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/3959]  |
| 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.Univ Calif San Diego, San Diego, CA 92103 USA 2.Univ Toronto, Toronto, ON M5S 1A1, Canada 3.Northwestern Univ, Evanston, IL 60208 USA 4.Chinese Acad Sci, Inst Automat, Beijing 100190, Peoples R China 5.Xidian Univ, Life Sci Res Ctr, Xian 710071, Shaanxi, Peoples R China 6.Beijing Jiaotong Univ, Sch Comp & Informat Technol, Dept Biomed Engn, Beijing 100044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jiangang,Li, Jun,Zhang, Hongchuan,et al. Neural correlates of top-down letter processing[J]. NEUROPSYCHOLOGIA,2010,48(2):636-641. |
| APA | Liu, Jiangang.,Li, Jun.,Zhang, Hongchuan.,Rieth, Cory A..,Huber, David E..,...&Tian, Jie.(2010).Neural correlates of top-down letter processing.NEUROPSYCHOLOGIA,48(2),636-641. |
| MLA | Liu, Jiangang,et al."Neural correlates of top-down letter processing".NEUROPSYCHOLOGIA 48.2(2010):636-641. |
入库方式： OAI收割
来源：自动化研究所
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