State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai, China.
Health Phys. 2011 Jun;100(6):632-40. doi: 10.1097/HP.0b013e3182027d10.
As the application of millimeter waves for civilian and military use increases, the possibility of overexposure to millimeter waves will also increase. This paper attempts to evaluate stress reactions evoked by 35 GHz millimeter waves. The stress reactions in Sprague-Dawley (SD) rats were quantitatively studied by analyzing electroencephalogram (EEG) changes induced by overexposure to 35 GHz millimeter waves. The relative changes in average energy of the EEG and its wavelet decompositions were used for extracting the stress reaction indicators. Incident average power densities (IAPDs) of 35 GHz millimeter waves from 0.5 W cm(-2) to 7.5 W cm(-2) were employed to investigate the relation between irradiation dose and the stress reactions in the rats. Different stress reaction periods evoked by irradiation were quantitatively evaluated by EEG results. The results illustrate that stress reactions are more intense during the first part of the irradiation than during the later part. The skin temperature increase produced by millimeter wave irradiation is the principle reason for stress reactions and skin injuries. As expected, at the higher levels of irradiation, the reaction time decreases and the reaction intensity increases.
随着毫米波在民用和军用方面的应用增加，人们接触毫米波的可能性也会增加。本文试图评估 35GHz 毫米波引起的应激反应。通过分析 35GHz 毫米波照射引起的脑电图（EEG）变化，对 Sprague-Dawley（SD）大鼠的应激反应进行了定量研究。利用 EEG 及其小波分解的平均能量的相对变化来提取应激反应指标。采用 35GHz 毫米波的入射平均功率密度（IAPD）从 0.5W/cm(2)到 7.5W/cm(2)，研究了辐照剂量与大鼠应激反应之间的关系。通过 EEG 结果定量评估了不同辐照应激反应期。结果表明，照射的前半部分比后半部分应激反应更强。毫米波辐照引起的皮肤温度升高是应激反应和皮肤损伤的主要原因。正如预期的那样，在较高的照射水平下，反应时间缩短，反应强度增加。
