Vyatleva O A, Teksheva L M, Kurgansky A M
Gig Sanit. 2016;95(10):965-8.
To test the effect of mobile phones (MP) of various radiation intensities on the functional state of the brain in children and adolescents, a sham-controlled EEG-study was conducted in a group of thirteen 6-13 years old children, including eight 6-10 years old children. The study showed that a 3-minute exposure to the MP causes the significant decline in alpha-band absolute power, which depends on the radiation intensity and the user’s age. Different from sham, an EEG-effect of MP with the energy flux density (EFD) about 100 mW/cm2 was registered both in total, and in a younger (6-10 yr) group. Its bilateral character, more prominent in the hemisphere that is ipsilateral to MP, indicates that this intensity of the radiation influences not only the superficial cortical areas of the ipsilateral hemisphere, but also the deep structures of the brain. MP with the EFD less than 1 mW/cm2 differed from sham by EEG-effect only in the group of children who are 6-10 years old. Its local, ipsilateral character indicates to the superficial influence of such intensity of the radiation on the cortex of the ipsilateral hemisphere. The results show that for the regulation of MP-radiation it’s necessary to consider age features of the brain’s response. The high significance of the EFD, as an index in the assessment of the impact of MP on the EEG of children, is shown. Since almost all schoolchildren are the users of mobile phones, the situation with the valuation of MP-effects on children of various ages, requires hygienic solution.
为测试不同辐射强度的手机（MP）对儿童和青少年大脑功能状态的影响，对一组13名6 - 13岁儿童（包括8名6 - 10岁儿童）进行了假对照脑电图研究。研究表明，3分钟暴露于手机会导致α波频段绝对功率显著下降，这取决于辐射强度和使用者年龄。与假对照组不同，能量通量密度（EFD）约为100 mW/cm²的手机在总体以及较年轻（6 - 10岁）组中均记录到了脑电图效应。其双侧性在与手机同侧的半球更为明显，表明这种辐射强度不仅影响同侧半球的表层皮质区域，还影响大脑深部结构。EFD小于1 mW/cm²的手机仅在6 - 10岁儿童组中脑电图效应与假对照组不同。其局部、同侧性表明这种辐射强度对同侧半球皮质有表层影响。结果表明，对于手机辐射的调控，有必要考虑大脑反应的年龄特征。研究显示了EFD作为评估手机对儿童脑电图影响指标的高度重要性。由于几乎所有学童都是手机使用者，评估手机对不同年龄段儿童影响的情况需要卫生学解决方案。
