中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 心理研究所
  3. 中国科学院心理研究所
  4. 中国科学院心理研究所回溯数据库(1956-2010)
Perceptual load interacts with involuntary attention at early processing stages: Event-related potential studies

文献类型：期刊论文

作者Fu, Shimin1; Huang, Yuxia2; Luo, Yuejia2; Wang, Yan3; Fedota, John1; Greenwood, Pamela M.1; Parasuraman, Raja1; S. M. Fu
刊名NEUROIMAGE
出版日期2009-10-15
卷号48期号:1页码:191-199
关键词Perceptual load Involuntary attention Event-related potentials (ERPs) Peripheral cueing C1 P1m
ISSN号1053-8119
文献子类Article
英文摘要Perceptual load is known to influence the locus of attentional selection in the brain but through an unknown underlying mechanism. We used event-related potentials (ERPs) to investigate how perceptual load interacts with cue-driven involuntary attention. Perceptual load was manipulated in a line orientation discrimination task in which target location was cued involuntarily by means of peripheral cues. Attentional modulation was observed for P1m (the posterior midline P1 component with peak latency between 108 and 140 ms) with invalid trials eliciting larger P1m than valid trials. This attentional effect on P1m increased as a function of perceptual load, suggesting an early temporal locus for the interaction of perceptual load and involuntary attention. Attentional modulation for the C1 component (peak latency at approximately 80 ms) was also observed, but only for high-load stimuli that were presented intermixed with low-load stimuli. Results suggest that (a) perceptual load affects attentional selection at early processing stages; (b) perceptual load interacts with involuntary attention earlier and with different brain mechanisms relative to voluntary attention: and (c) attentional modulation in the C1 time range is possible under optimal experimental conditions.; Perceptual load is known to influence the locus of attentional selection in the brain but through an unknown underlying mechanism. We used event-related potentials (ERPs) to investigate how perceptual load interacts with cue-driven involuntary attention. Perceptual load was manipulated in a line orientation discrimination task in which target location was cued involuntarily by means of peripheral cues. Attentional modulation was observed for P1m (the posterior midline P1 component with peak latency between 108 and 140 ms) with invalid trials eliciting larger P1m than valid trials. This attentional effect on P1m increased as a function of perceptual load, suggesting an early temporal locus for the interaction of perceptual load and involuntary attention. Attentional modulation for the C1 component (peak latency at approximately 80 ms) was also observed, but only for high-load stimuli that were presented intermixed with low-load stimuli. Results suggest that (a) perceptual load affects attentional selection at early processing stages; (b) perceptual load interacts with involuntary attention earlier and with different brain mechanisms relative to voluntary attention: and (c) attentional modulation in the C1 time range is possible under optimal experimental conditions. (C) 2009 Elsevier Inc. All rights reserved.
学科主题认知心理学
语种英语
WOS记录号WOS:000269321100022
公开日期2011-08-22
源URL[http://ir.psych.ac.cn/handle/311026/5617]  
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S. M. Fu
作者单位1.George Mason Univ, ARCH Lab, Dept Psychol, Fairfax, VA 22030 USA
2.Beijing Normal Univ, Natl Key Lab Cognit Neurosci & Learning, Beijing 100875, Peoples R China
3.Chinese Acad Sci, Key Lab Mental Hlth, Inst Psychol, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Fu, Shimin,Huang, Yuxia,Luo, Yuejia,et al. Perceptual load interacts with involuntary attention at early processing stages: Event-related potential studies[J]. NEUROIMAGE,2009,48(1):191-199.
APA Fu, Shimin.,Huang, Yuxia.,Luo, Yuejia.,Wang, Yan.,Fedota, John.,...&S. M. Fu.(2009).Perceptual load interacts with involuntary attention at early processing stages: Event-related potential studies.NEUROIMAGE,48(1),191-199.
MLA Fu, Shimin,et al."Perceptual load interacts with involuntary attention at early processing stages: Event-related potential studies".NEUROIMAGE 48.1(2009):191-199.

入库方式： OAI收割

来源：心理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。