【摘要】 本文对360例煤矿工人老年前期和老年期α频率慢化的研究,并与对照组365例干部比较,结果:若以9Hz以下的α波定为慢化,矿工组60—69岁α慢化率为14.23％,干部为1.78％,两组有显著差异。矿工组55岁出现α波慢化,干部组则无1例出现慢化现象。说明煤矿工人在井下作业是一个特殊环境区,矿工衰老比较早而出现α频率慢化。更多还原

【Abstract】 The article has been studied X - frequence chronic of 360 cases coalmine in the before old age and the aged. It was compared with collate group of 365 cardres, the results were that X - frequence chronic of coalmine group in 60-69 old was 14. 23% ?that of cardres was 1. 78% , two groups had remarkable difference. There were 55 cases to have X - rate chronic in coalmine, there was no in cardres, It was related that the coalmine were old more early and X - frequence chronic.更多还原