无空间线索化下视觉注意空间等级的ERP研究
发布时间：2018-07-15 18:01
【摘要】：采用事件相关电位(Event-Related Potential,ERP)技术考察了无空间线索化下视觉注意资源在不同空间等级的分布情况。通过"预警信号-目标探测"范式,目标刺激随机出现在直径视角为3.2°、6.4°以及9.6°的三个等级圆上。反应时显示:对目标刺激的探测速度随注意范围增大而下降。脑电显示:三种条件下目标刺激诱发的N1和P3分别产生了不同程度的分离,主要表现为两成分的波幅随注意范围增大而减小。这表明个体在无空间线索化下可能自动地选择对不同空间等级进行资源分配。
[Abstract]:Event-Related potential (ERP) was used to investigate the distribution of visual attention resources in different spatial levels without spatial cues. Through the "early warning signal-target detection" paradigm, the target stimulus appears randomly on three circles with a diameter angle of 3.2 掳, 6.4 掳and 9.6 掳. The response time showed that the detection speed of target stimulation decreased with the increase of attention range. EEG showed that N _ 1 and P _ 3 induced by target stimulation were separated in different degrees under the three conditions, mainly that the amplitude of the two components decreased with the increase of attention range. This indicates that individuals may automatically choose to allocate resources to different spatial levels without spatial cues.
【作者单位】： 上海师范大学教育学院;河南大学教育科学学院;西南大学心理学部;
【基金】：国家自然科学基金项目(31200768) 上海市教育委员会科研创新项目(15ZS041)的资助
【分类号】：B842.3
[Abstract]:Event-Related potential (ERP) was used to investigate the distribution of visual attention resources in different spatial levels without spatial cues. Through the "early warning signal-target detection" paradigm, the target stimulus appears randomly on three circles with a diameter angle of 3.2 掳, 6.4 掳and 9.6 掳. The response time showed that the detection speed of target stimulation decreased with the increase of attention range. EEG showed that N _ 1 and P _ 3 induced by target stimulation were separated in different degrees under the three conditions, mainly that the amplitude of the two components decreased with the increase of attention range. This indicates that individuals may automatically choose to allocate resources to different spatial levels without spatial cues.
【作者单位】： 上海师范大学教育学院;河南大学教育科学学院;西南大学心理学部;
【基金】：国家自然科学基金项目(31200768) 上海市教育委员会科研创新项目(15ZS041)的资助
【分类号】：B842.3
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【共引文献】
相关期刊论文 前10条
1 高文斌,魏景汉,彭小虎,罗跃嘉;视觉注意范围的调控机制[J];航天医学与医学工程;2002年03期
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