Ogawa T, Sonoda H, Ishiwa S, Goto K, Kojou M, Sawaguchi H, Wakayama K, Suzuki M
No To Hattatsu. 1989 Sep;21(5):424-9.
By the use of an autoregressive (AR) model, development of beta-waves in quantitative EEG parameters was studied in 1,340 normal children aged from 3 to 12 years. The results were summarized as follows. The beta band(13.5-25 Hz) was divided into three frequency ranges; beta-1(13.5-17.4 Hz), beta-2(17.5-21.4 Hz) and beta-3 (21.5-25 Hz) waves. The average power and percent-power of the beta-1 and beta-2 waves increased with advancing age, whereas these of the beta-3 wave showed no change with advancing age. By means of EEG pattern discrimination, critical period of beta band in the developing EEG was observed at the age of 4 years in frontal region, 10 years in central region and 3 to 7 years in occipital region. Those results suggest that the development of beta activity may be faster in frontal, occipital areas and relatively slower in central area.
通过使用自回归（AR）模型，对1340名3至12岁正常儿童定量脑电图参数中β波的发育情况进行了研究。结果总结如下。β频段（13.5 - 25赫兹）被分为三个频率范围：β-1（13.5 - 17.4赫兹）、β-2（17.5 - 21.4赫兹）和β-3（21.5 - 25赫兹）波。β-1和β-2波的平均功率和功率百分比随年龄增长而增加，而β-3波的这些指标随年龄增长无变化。通过脑电图模式判别，在额叶区域4岁、中央区域10岁、枕叶区域3至7岁时观察到发育中脑电图β频段的关键期。这些结果表明，β活动在额叶、枕叶区域的发育可能更快，而在中央区域相对较慢。
