摘要
目的 以往调查研究发现 ,都市环境电磁辐射水平在某些频段综合场强已接近一级安全区的限值 ,为了阐明这些频段电磁波同时混合存在于一个环境内是否会对青少年的脑电活动产生影响 ,作者进行了本项研究。方法 采用脑电地形图仪对 10 6例青少年大脑中央区脑电进行检查。结果 高背景环境电磁辐射组左中央区女θ波的RNP、女和男女合计θ波的REP、男θ波的RAV明显高于低背景环境电磁辐射组 (P 均 <0 .0 5 )。高背景环境电磁辐射组右中央区男θ波的RNP明显低于低背景环境电磁辐射组 (P <0 .0 5 )。结论 大都市现有环境电磁辐射对青少年(14～ 18a)大脑中央区的生物电活动可能有一定的影响 ,主要表现在女性θ波 (频率为 4～ 7Hz)RNP、REP升高 ;男性θ波RNP下降、RAV升高。
Objective Previous investigation indicated that electromagnetic radiation level of city environment in some frequency range has gotten close to national standard limits. This study was to investigate the effects of these frequency electromagnetic waves coexisted in same environment on teenagers' electroencephalogram. Methods Electroencephalogram was examined in 106 cases of teenagers by using electroencephalogram-topography instrument. Results In central region of left cerebrum, rhythm-wave number percentage (RNP) of θ-wave in girls, rhythm-wave energy percentage (REP) of θ-wave in girls and in total, rhythm-wave amplitude voltage (RAV) of θ-wave in boys were significantly higher in high electromagnetic radiation environment than those in low electromagnetic radiation environment ( P<0.05 ). In central region of right cerebrum, RNP of θ-wave in boys were significantly lower in high electromagnetic radiation environment than those in low electromagnetic radiation environment ( P<0.05 ). Conclusions The electromagnetic radiation nowadays in metropolis environment may have harmful effects on teenagers' bioelectricity in central region of cerebrum-mainly showing increased RNP and REP of θ-wave in girls, increased RAV and decreased RNP of θ-wave in boys.
出处
《疾病控制杂志》
2004年第4期332-335,共4页
Chinese Journal of Disease Control and Prevention
基金
重庆市环境保护科学基金资助项目 (环 1999 0 6 )
