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Early scale effect and hemisphere superiority on the visual spatial attention: From the electrophysiological evidence of ERP
Song, WQ; Gao, Y; Luo, YJ; Luo Yuejia
2004-10-01
Source PublicationPROGRESS IN NATURAL SCIENCE
ISSN1002-0071
SubtypeArticle
Volume14Issue:10Pages:875-879
AbstractThe visual attention mechanism in the brain was studied among 16 young subjects through the precue-target visual search paradigm using the event-related potentials ( ERPs) technique, with the attentive ranges cued with different scales of Chinese words. The results showed that the response time was shortened as the cue scale was reduced, while the amplitudes of the P1 and N1 components of the ERPs increased. These results not only provided the electrophysiological evidence supporting the spotlight theory, but also indicated that the spotlight effect occurred during the early period of the selected attention. Two kinds of separation in the P2 effect were observed. One separation was between the P1 effect and P2 effect, which meant that additional computation was needed when the spatial scale of attention was enlarged; the other was between the left and right hemisphere of the P2 effect, which indicates that the attentive processing of the cue range mainly occurred in the left hemisphere.; The visual attention mechanism in the brain was studied among 16 young subjects through the precue-target visual search paradigm using the event-related potentials ( ERPs) technique, with the attentive ranges cued with different scales of Chinese words. The results showed that the response time was shortened as the cue scale was reduced, while the amplitudes of the P1 and N1 components of the ERPs increased. These results not only provided the electrophysiological evidence supporting the spotlight theory, but also indicated that the spotlight effect occurred during the early period of the selected attention. Two kinds of separation in the P2 effect were observed. One separation was between the P1 effect and P2 effect, which meant that additional computation was needed when the spatial scale of attention was enlarged; the other was between the left and right hemisphere of the P2 effect, which indicates that the attentive processing of the cue range mainly occurred in the left hemisphere.
Keywordvisual spatial attention cue scale spotlight effect hemisphere superiority event-related potential (ERP)
Subject Area认知神经科学
Indexed BySCI
Language英语
WOS IDWOS:000224688400006
Citation statistics
Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/5349
Collection中国科学院心理研究所回溯数据库(1956-2010)
Corresponding AuthorLuo Yuejia
Affiliation1.Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing 100101, Peoples R China
2.SW China Normal Univ, Sch Psychol, Chongqing 400715, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Song, WQ,Gao, Y,Luo, YJ,et al. Early scale effect and hemisphere superiority on the visual spatial attention: From the electrophysiological evidence of ERP[J]. PROGRESS IN NATURAL SCIENCE,2004,14(10):875-879.
APA Song, WQ,Gao, Y,Luo, YJ,&Luo Yuejia.(2004).Early scale effect and hemisphere superiority on the visual spatial attention: From the electrophysiological evidence of ERP.PROGRESS IN NATURAL SCIENCE,14(10),875-879.
MLA Song, WQ,et al."Early scale effect and hemisphere superiority on the visual spatial attention: From the electrophysiological evidence of ERP".PROGRESS IN NATURAL SCIENCE 14.10(2004):875-879.
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