正常儿童视觉空间注意ERP的研究  

An Event-Related Potentials Study of Children's Visual-Spatial Attention

作　　者：陈小奕[1] 孟平[1] 董选[1] 刘小军[2] 王苏弘[1] 徐枫[1] 

机构地区：[1]常州市第一人民医院,江苏常州213003 [2]苏州大学附属第二医院,江苏苏州215004

出　　处：《中国临床心理学杂志》2006年第3期289-291,共3页Chinese Journal of Clinical Psychology

基　　金：国家自然科学基金资助(项目号:30470566)

摘　　要：目的:研究正常儿童空间视觉注意刺激诱发的事件相关电位(Event-RelatedPotentialsERP)的特征。方法:采用有效提示、无效提示刺激模块(即PosnerCue)对30名8岁儿童进行检测。刺激信号同步触发,数字化脑电图(EEG)同步记录,使用德国的Besa软件从中提取ERP进行分析。结果:同一导联脑枕后部同一导联有效提示的N1、P2波幅大于无效提示(P<0.05),潜伏期无差异(P>0.05);脑顶前部有效提示的P1波幅大于无效提示,N1波幅则小于无效提示(P<0.05),潜伏期无差异(P>0.05);脑顶前部导联的N1潜伏期长于枕后部导联(P<0.05)。结论:处理有效刺激的投入大收益也大,处理无效刺激的投入小收益也小,但儿童易受差异信息的干扰使得收益发生改变;二者的处理时程相似。Objective： To study the eharacteristic of children＇s Event-Related Potentials by visual-spatial attention stimuli. Methods： 30 8-year-old healthy children were examined with two lists of visual-spatial attention stimuli （valid and invalid）. While the stimulus information was shown to participants, EEG was recorded simuhaneously. Results： In the occipital region, the N1 and P2 components were enhanced by validly cued stimuli： In the frontal and central regions, the P1 component was enhanced by validly cued stimuli and the N1 component was enhanced by invalidly cued stimuli. The latencies of the N1 in the occipital region were significantly shorter than those in the frontal and central regions. Conclusion： There is an enhanced efficiency of sensory-perceptual processing for attended location stimuli （validly cued stimuli）. but children＇ s target performance is affected by the mere variation of information in non-target channels.

关 键 词：空间视觉注意 事件相关电位 儿童 

分 类 号：R395.1[哲学宗教—心理学]