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虽然从首次报告中潜伏期反应(MLR)以来已有25年之久,但迄今对儿童的MLR尚有争议,为弄清MLR波形中有关年龄因素的影响,本文对9名成人和28名儿童MLR中有关年龄的变化进行了研究。受试儿童依年龄分成4～7岁,8～11岁和12～14岁三组,测试条件:受试者在声、电屏蔽室内,自然睡眠或给予镇静剂后进行。结果发现:成年入睡眠时的MLR有显著的个体变异性。成年人的复合MLR是在ABR之后出现的,有很明确的Na-Pa-Nb-Pb复合波形,这种波形在20Hz高通滤波时尤为明显。儿童和成人MLR的主要差异是其Pa波宽而且潜伏期长(Pa为40ms,Nb为60ms)。8～11岁组的Pa峰潜伏期接近成人值,而后面几个波的潜伏期仍长于成人值,这表明此年龄组的MLR是成人和儿童的混合型,也提示儿童MLR中Pa成份较早接近成人型。12～14岁组MLR的
Although 25 years have passed since the initial report of latency response (MLR), so far the MLR of children is still controversial, in order to understand the impact of age-related factors in MLR waveforms, this article 9 adults and 28 children MLR In the study of age-related changes. Subjects were divided into three groups according to age, 4 to 7 years old, 8 to 11 years old and 12 to 14 years old. The test conditions were as follows: the subjects were in the sound, electric shielding room, natural sleep or sedative. The results showed that: adult sleep into the MLR significant individual variability. Composite adult MLRs occur after ABR and have well-defined Na-Pa-Nb-Pb composite waveforms that are particularly noticeable at 20 Hz high-pass filtering. The main difference between MLR for children and adults is its Pa wave width and long latency (40 ms for Pa and 60 ms for Nb). The Pa peak latency of 8 to 11 age group is close to the adult value, while the wave latency of the latter few waves is still longer than the adult value, indicating that MLR in this age group is a mixture of adult and child and also suggests that the Pa component in children’s MLR is earlier approached Adult type. 12 to 14 years old group MLR