Neural substrates of visual perceptual learning of simple and complex stimuli
文献类型：期刊论文
| 作者 | Song, Y; Ding, YL; Fan, SL; Qu, Z; Xu, L; Lu, CM; Peng, D |
| 刊名 | Clinical neurophysiology
 |
| 出版日期 | 2005-03-01 |
| 卷号 | 116期号:3页码:632-639 |
| 关键词 | Visual perceptual learning Event-related potentials (erps) Simple stimuli Complex stimuli Discrimination Human adults |
| ISSN号 | 1388-2457 |
| DOI | 10.1016/j.clinph.2004.019 |
| 通讯作者 | Song, y(songyan@bnu.edu.cn) |
| 英文摘要 | Objective: the two experiments described here used event-related potentials (erps) to investigate whether perceptual learning of different complexities of stimuli involves different levels of visual cortical processing in human adults. methods: reaction times and erps were recorded during 3 consecutive training sessions in which subjects discriminated between simple stimuli made of line segments or complex stimuli made of compound shapes. results: reaction times in both experiments were shortened across training sessions. for simple stimuli, training resulted in a decreased n1 (125-155 ms) and an increased p2 (180-240 ms) over the occipital area. for complex stimuli, however, training resulted in a decreased n1 (125-155 ms) and n2 (290-340 ms) and an increased p3 (350-550 ms) over the central/parietal areas. conclusions: these findings suggest that perceptual learning modifies the response at different levels of visual cortical processing related to the complexity of the stimulus. significance: the neuronal mechanisms involved in perceptual learning may depend on the nature (e.g. the complexity) of the stimuli used in the discrimination task. (c) 2004 international federation of clinical neurophysiology. published by elsevier ireland ltd. all rights reserved. |
| WOS关键词 | SELECTIVE ATTENTION ; OBJECT-RECOGNITION ; DISCRIMINATION ; SPECIFICITY ; ORIENTATION ; MECHANISMS ; SHAPE ; POTENTIALS ; CONTEXT ; CORTEX |
| WOS研究方向 | Neurosciences & Neurology |
| WOS类目 | Clinical Neurology ; Neurosciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000227895400016 |
| 出版者 | ELSEVIER SCI IRELAND LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2378177 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Song, Y |
| 作者单位 | 1.Beijing Normal Univ, Inst Cognit Neurosci & Learning, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Key Lab Cognit Sci, Grad Sch, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Key Lab Cognit Sci, Inst Biophys, Beijing 100101, Peoples R China 4.Sun Yat Sen Univ, Dept Psychol, Guangzhou 510275, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Y,Ding, YL,Fan, SL,et al. Neural substrates of visual perceptual learning of simple and complex stimuli[J]. Clinical neurophysiology,2005,116(3):632-639. |
| APA | Song, Y.,Ding, YL.,Fan, SL.,Qu, Z.,Xu, L.,...&Peng, D.(2005).Neural substrates of visual perceptual learning of simple and complex stimuli.Clinical neurophysiology,116(3),632-639. |
| MLA | Song, Y,et al."Neural substrates of visual perceptual learning of simple and complex stimuli".Clinical neurophysiology 116.3(2005):632-639. |
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来源：中国科学院大学
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