中国临床心理学杂志

汉字刺激正常儿童认知电位的研究

作者：董选何晓红杨玉霞孟平付亚平

关键词：汉字刺激认知电位儿童

分类号：R395.9

出版年,卷(期):页码：2005,13(1):96-97

摘要：

目的:探讨8岁组正常儿童汉字刺激产生认知电位的特征。方法:对53名正常儿童采用加拿大StellateSystems32道数字化无纸脑电图仪,并用汉字、韩字,汉字打乱形式三种刺激模块检测(包括常规及快流方法)。刺激信号同步触发,脑电图(EEG)同步记录,从EEG中提取认知电位(RP),事件相关电位(P300)进行分析。结果:RP及P300潜伏期各不相同,RP的潜伏期较P300潜伏期早;汉字潜伏期最短,对照组汉字打乱形式较韩字潜伏期长;常规及快流二种刺激方法比较无显著性差异;汉字刺激在枕前后部记录认知电位最大。结论:汉字刺激RP及P300将有助于评估儿童认知功能的发展。

Objective:To investigate the feature of Recognition Potential(RP)for eight-year healthy children which is evoked by Chinese character stimulus.Methods: We examined 53 eight-year healthy children with Canadian Stellate Systems 32 Channels Digital EEG and three stimulus of Chinese characters, Korean words, confused Chinese characters, with two patterns(Routine and Fast-flow pattern). While the stimulus information is sent to participants,EEG is recorded simultaneously. RP and event related potentials(P300) are extracted from EEG and analyzed.Results: The latency of RP is earlier than that of P300 for three stimulus. The latency of the Chinese character is the shortest of all, and the latency of confused Chinese characters is longer than that of Korean words. As for two stimulating patterns, there is no difference between Routine and Fast-flow pattern. RP of Chinese character stimulus is most significant at scalp dipole of supra-occiput and sub- occiput than that of others.Conclusion: RP and P300 could be useful for assessing the development of healthy children's cognitive function, especially for some disabilities, such as poor-reading disorder and disturbed maturation of language.

基金项目：

2004年国家自然基金资助项目(项目号:30470566)

作者简介：

参考文献：

[1] Alan Petre Rudell.The recognition potential contrasted with the P300. Intern J Neuroscience,1991:85-111
[2] Rudell RO, Cracco NF, et al. Recognition potential: sensitivity to visual field stimulated. Electroencephalography and Clinical Neurophysiology, 1993:221-234
[3] Albrecht R,Suchodoletz WV,Uwer R. The development of auditory evoked dipole source activity from childhood to adulthood.Clinical Neurophysiology, 2000:2268-2276

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