中国临床心理学杂志

正常学龄儿童不同模式刺激的P300特征

作者：刘晓燕左启华

关键词：P300 刺激模式儿童认知

分类号：B844.1

出版年,卷(期):页码：1996,4(4):217-219

摘要：

本文利用单音、图形、汉字三种刺激对60名正常学龄儿童进行测试.结果表明,三种刺激时P300潜伏期均随年龄增长而呈缩短趋势,而随着刺激难度的增加,P300潜伏期明显延长.左右半球间潜伏期无明显差异.在图形和汉字刺激时,枕部潜伏期较额部明显缩短.提示在学龄儿童,两半球可能共同参与其认知过程并具有相似的加工时间,且复杂视觉刺激具有串行加工过程.

In this experiment, the characteristics of P300 were examined by presenting different stimulus modalities, namely tone, picture and Chinese characters, to 16 school-age children. The results showed that the latency of P300 tended to be shortened with increasing age and lengthened with increasing complexity of stimulus modalities. While no hemispheric difference was obtained, latency duration was found to be shorter in the occipital region than in the frontal region upon stimulus presentation of picture and Chinese characters. These findings suggested that, for school-age children, both hemispheres are likely involved in the cognitive processes and complex visual stimuli require serial processing.

基金项目：

国家自然科学基金

作者简介：

参考文献：

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