Yanagihara M
Faculty of Education, Okayama University.
No To Hattatsu. 1995 Jul;27(4):276-81.
P 300 event-related potentials were recorded in 72 normal subjects ranging from 5 to 25 years of age for three visual discrimination tasks. A progressive decrease of P300 latency with curvelinear function was found in all the tasks. However, the age/P300 latency slope from 5 to 14 years was different for two word discrimination tasks and a color discrimination task, -17 ms/y (-16 ms/y) and -28 ms/y respectively. The curvelinear regression equation predicted the shortest latency of P300 to be observed at 26 years (28 years) in word discrimination tasks in contrast to 19 years in a color discrimination task. These results indicated the P300 latency varies depending upon the task type; different tasks require different modes of cognitive information processing. This fact should be taken into account when P300 latency is used for evaluating children's cognitive development.
对72名年龄在5至25岁之间的正常受试者进行了三项视觉辨别任务的P300事件相关电位记录。在所有任务中均发现P300潜伏期呈曲线函数逐渐下降。然而，在两项单词辨别任务和一项颜色辨别任务中，5至14岁的年龄/P300潜伏期斜率不同，分别为-17毫秒/年（-16毫秒/年）和-28毫秒/年。曲线回归方程预测，在单词辨别任务中，P300潜伏期最短将出现在26岁（28岁），而在颜色辨别任务中为19岁。这些结果表明，P300潜伏期因任务类型而异；不同的任务需要不同的认知信息处理模式。在使用P300潜伏期评估儿童认知发展时，应考虑这一事实。
