Early ERP effects on the scaling of spatial attention in visual search

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	Early ERP effects on the scaling of spatial attention in visual search
	Niu, Ya-Nan2,3 ; Wei, Jing-Han 2; Luo, Yue-Jia1,2
摘要	This article describes the examination of the spatial `scaling' effect of visual attention with the technique of event-related potential (ERP). Eighteen participants were involved in a visual search task in which the cue-target paradigm was used. The search array was three concentric circles consisting of randomly selected English letters that were equally distributed in each circle. The behavioral and ERP data were recorded, respectively. The behavioral results showed that the response time increased and the response accuracy decreased with the increase of precue size. The ERPs amplitude of P1 and N1 components evoked by search array increased with the reduction of precue size. However, the latencies of these ERP components did not show significant differences between conditions. The hierarchical data of both behavioral assessment and ERPs provided evidence for the spatial `scaling' effect of visual attention. The amplitudes of P1 and N1 components may be used as indices to examine the effect of spatial `scaling'. In different tasks, the display-set size of stimuli and the task complexity may be important factors that affect the attention allocation.; This article describes the examination of the spatial `scaling' effect of visual attention with the technique of event-related potential (ERP). Eighteen participants were involved in a visual search task in which the cue-target paradigm was used. The search array was three concentric circles consisting of randomly selected English letters that were equally distributed in each circle. The behavioral and ERP data were recorded, respectively. The behavioral results showed that the response time increased and the response accuracy decreased with the increase of precue size. The ERPs amplitude of P1 and N1 components evoked by search array increased with the reduction of precue size. However, the latencies of these ERP components did not show significant differences between conditions. The hierarchical data of both behavioral assessment and ERPs provided evidence for the spatial `scaling' effect of visual attention. The amplitudes of P1 and N1 components may be used as indices to examine the effect of spatial `scaling'. In different tasks, the display-set size of stimuli and the task complexity may be important factors that affect the attention allocation. (C) 2007 National Natural Science Foundation of China and Chinese Academy of Sciences. Published by Elsevier Limited and Science in China Press. All rights reserved.
关键词	visual search spatial attention 'scaling' effect event-related potential
学科领域	认知神经科学
	2008-04-10
语种	英语
发表期刊	PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
ISSN	1002-0071
卷号	18 期号:4 页码:381-386
期刊论文类型	Article
收录类别	SCI
WOS记录号	WOS:000255287800003
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.psych.ac.cn/handle/311026/5347
专题	中国科学院心理研究所回溯数据库(1956-2010)
作者单位	1.Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Inst Psychol, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
第一作者单位	中国科学院心理研究所
推荐引用方式 GB/T 7714	Niu, Ya-Nan,Wei, Jing-Han,Luo, Yue-Jia. Early ERP effects on the scaling of spatial attention in visual search[J]. PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL,2008,18(4):381-386.
APA	Niu, Ya-Nan,Wei, Jing-Han,&Luo, Yue-Jia.(2008).Early ERP effects on the scaling of spatial attention in visual search.PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL,18(4),381-386.
MLA	Niu, Ya-Nan,et al."Early ERP effects on the scaling of spatial attention in visual search".PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL 18.4(2008):381-386.

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