Neural correlates of perceptual priming of visual motion
文献类型：期刊论文
| 作者 | Jiang, Y ; Luo, YJ; Parasuraman, R; Y. Jiang,Y. J. Luo
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| 刊名 | BRAIN RESEARCH BULLETIN
 |
| 出版日期 | 2002-01-15 |
| 卷号 | 57期号:2页码:211-219 |
| 关键词 | perceptual priming visual motion brain imaging ERP fMRI |
| ISSN号 | 0361-9230 |
| 文献子类 | Article |
| 英文摘要 | In two experiments, the temporal dynamics of neural activity underlying perceptual priming of visual motion was examined using event-related potentials (ERPs) during directional judgments of the apparent motion of two-dimensional sine-wave gratings. Compared to perceptually ambiguous motion, unambiguous left- or rightward motion was associated with enhanced ERP activity about 300 ms after the onset of apparent motion. In the second experiment, ERPs were recorded to two successive motion jumps in which an unambiguous motion jump served as a prime for a subsequent target motion that was ambiguous. The prime-target time interval was varied between 200, 400, and 1000 ms. In a control (motion reversal) condition, the two motion jumps were both unambiguous but in opposite directions. Compared to the motion reversal condition, motion priming was associated with an enhancement of ERP amplitudes at 100 ms and 350 ms following target stimulus onset. ERP enhancement was greatest at a short prime-target interval of 200 ms, which was also associated behaviorally with the strongest priming. The ERP enhancement and behavioral priming were both eliminated at the long 1000 ms prime-target interval. Functional magnetic resonance imaging (fMRI) data from a subset of subjects supported the view that motion priming involves modulation of neural responses both in early visual cortex and in later stages of visual processing.; In two experiments, the temporal dynamics of neural activity underlying perceptual priming of visual motion was examined using event-related potentials (ERPs) during directional judgments of the apparent motion of two-dimensional sine-wave gratings. Compared to perceptually ambiguous motion, unambiguous left- or rightward motion was associated with enhanced ERP activity about 300 ms after the onset of apparent motion. In the second experiment, ERPs were recorded to two successive motion jumps in which an unambiguous motion jump served as a prime for a subsequent target motion that was ambiguous. The prime-target time interval was varied between 200, 400, and 1000 ms. In a control (motion reversal) condition, the two motion jumps were both unambiguous but in opposite directions. Compared to the motion reversal condition, motion priming was associated with an enhancement of ERP amplitudes at 100 ms and 350 ms following target stimulus onset. ERP enhancement was greatest at a short prime-target interval of 200 ms, which was also associated behaviorally with the strongest priming. The ERP enhancement and behavioral priming were both eliminated at the long 1000 ms prime-target interval. Functional magnetic resonance imaging (fMRI) data from a subset of subjects supported the view that motion priming involves modulation of neural responses both in early visual cortex and in later stages of visual processing. (C) 2002 Elsevier Science Inc. |
| 学科主题 | 认知神经科学 |
| 语种 | 英语 |
| WOS记录号 | WOS:000173923300010 |
| 公开日期 | 2011-08-22 |
| 源URL | [http://ir.psych.ac.cn/handle/311026/5567]  |
| 专题 | 心理研究所_中国科学院心理研究所回溯数据库(1956-2010) |
| 通讯作者 | Y. Jiang,Y. J. Luo |
| 作者单位 | 1.Catholic Univ Amer, Cognit Sci Lab, Washington, DC 20064 USA 2.NIMH, Lab Brain & Cognit, Bethesda, MD 20892 USA 3.Chinese Acad Sci, Inst Psychol, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Y,Luo, YJ,Parasuraman, R,et al. Neural correlates of perceptual priming of visual motion[J]. BRAIN RESEARCH BULLETIN,2002,57(2):211-219. |
| APA | Jiang, Y,Luo, YJ,Parasuraman, R,&Y. Jiang,Y. J. Luo.(2002).Neural correlates of perceptual priming of visual motion.BRAIN RESEARCH BULLETIN,57(2),211-219. |
| MLA | Jiang, Y,et al."Neural correlates of perceptual priming of visual motion".BRAIN RESEARCH BULLETIN 57.2(2002):211-219. |
入库方式： OAI收割
来源：心理研究所
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