视觉搜索中空间注意范围等级调节的早期ERP效应
查看参考文献24篇
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文摘
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对18名被试青年进行事件相关电位(ERP)实验以研究视觉空间注意范围等级效应的脑机制.采用"提示-靶"实验范式,刺激材料使用等密度排列的字母组成的3个同心圆,以去除字母排列密度不均匀对注意范围等级效应的影响.记录反应时和ERP数据.结果表明:随着提示范围的增大,识别靶刺激的反应时延长,靶刺激引起的P1,N1波幅减小.行为数据和ERP波幅的等级式变化提示视觉注意范围的等级效应,并发现该等级效应受到了来自任务难度、刺激物数量及分布等多种因素的影响. |
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来源
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自然科学进展
,2007,17(7):893-898 【核心库】
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关键词
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视觉搜索
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空间注意
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范围等级
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事件相关电位
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地址
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中国科学院心理研究所, 北京, 100101
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1002-008X |
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学科
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生理学 |
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基金
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国家自然科学基金
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国家教育部重点项目
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文献收藏号
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CSCD:2914831
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24
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