摘要
观察记录了204例正常婴幼儿对6次重复视觉图像信号刺激和一次新鲜图像信号刺激的应答表现。不同月龄组的婴儿均对每次重复刺激的注视时间逐渐下降(即习惯化),对新鲜刺激都表现出注视时间的恢复。小年龄婴儿的平均注视时间比年长儿长,应答降低率和应答恢复值也随年龄的增长而增加。从年龄发育来看,6月龄以前变化较小,6至12月龄之间的变化较大,而12至36月龄之间的变化相对平缓。结果证实,脑发育较好,较为成熟婴儿的习惯化速度较快;婴儿对重复刺激习惯化后能区别已熟悉的和新鲜的刺激。
204 infants aged 0～3 years were exposed to a re- dundant visual stimulus repeated 6 times and a novel one at 20 second intervals.The infants' fixation time decreased gradually over 6 repeated trials and recov- ered when a novel stimulus was given.Younger infants looked at the stimuli longer than the older infants:the rate of response decrement and response recovery in- creased with age.In regard to variation with age.the change before 6 months was relatively small,and from 6 to 12 months the change was greater than that from 12 to 36 months,These results suggest that more ma ture infants habituate more efficiently,and they could differentiate the familiar stimulus from the novel one.
出处
《中国行为医学科学》
CSCD
1996年第1期5-6,共2页
Chinese Journal of Behavioral Medical Science
关键词
视觉
视觉注意
习惯化
恢复
婴儿
Visual attention
Habituation
Recovery Infant
