6～12岁儿童脑波功率涨落特点与信息加工速度的关系

THE DEVELOPMENT OF ENCEPHALOFLUCTION AND ITS RELATIONS WITH SPEED OF INFORMATION PROCESSING FOR PUPILS OF 6 TO 12

以 2 0 1名 6～ 12岁小学生为研究对象 ,采用脑电波超慢涨落分析技术 (ET) ,对其脑波活动进行了记录和分析 .结果表明 :(1) 6～ 12岁儿童在其发展成熟的过程中 ,脑波各基频功率的发展趋势存在一定的差别 ,其中 6岁组各基频的功率普遍大于其他年龄组 ,并在S1,S2 ,S4 ,S5等几条谱线上差异显著 ;(2 )男孩和女孩的各基频功率的发展趋势存在着一定程度的差别 ,女孩的功率峰值大部分出现在 6 ,7岁 ,在 9岁时处于最低水平 ,而男孩的功率峰值大部分出现在 9岁 ;(3)在不同信息加工任务中表现较好的儿童的脑波基频功率的前后脑关系具有不同的特点 ,前脑优势的儿童在字母匹配任务上表现比较好 ,后脑优势的儿童则在心理旋转任务上获得了好成绩 ;(4)在不同信息加工任务中表现较好的儿童的脑波基频功率的左右脑关系具有不同的特点 ,左右脑比较平衡的儿童在简单反应、选择反应和图形匹配任务上表现较好 。

Two hundred and one 6～12 year old pupils encephalofluction is recorded and analyzed in detail by encephalofluctuography technology (ET). The tendency of changes in encephalofluction with age and its relations with speed of information processing are discussed. The results are as follows: (1) In the process of development from 6 to 12, the tendency of changes in power of different S spectral lines is different. In all S spectral lines, power of 6 years is stronger than other ages generally. And in several S spectral lines such as S1, S2, S4 and S5, these differences are significant. (2) The tendency of changes in S spectral power for boys and girls is different. Power peaks of girls S spectral lines usually appear in 6 or 7 years. S spectral power of 9 years is the weakest for girls. As a contrast, power peaks of boy S spectral lines almost appear in 9. (3) Children who do well in different information processing tasks appear different trails of relations between S spectral power in anterior brain and that in posterior brain. Children whose S spectral power gets dominance in anterior brain do well in the task of letter matching. And children whose S spectral power gets dominance in posterior brain do well in the task of mental rotation. (4) Children who do well in different information processing tasks appear different trails of relations between S spectral power in left brain and right brain. Children whose S spectral power appears balance between left brain and right brain do well in the tasks of simple reaction, select reaction and figure matching. And children whose S spectral power in left brain and in right brain is imbalance do well in the task of sentence picture matching.