Furubayashi Toshiaki, Ushiyama Akira, Terao Yasuo, Mizuno Yoko, Shirasawa Kei, Pongpaibool Pornanong, Simba Ally Y, Wake Kanako, Nishikawa Masami, Miyawaki Kaori, Yasuda Asako, Uchiyama Mitsunori, Yamashita Hitomi Kobayashi, Masuda Hiroshi, Hirota Shogo, Takahashi Miyuki, Okano Tomoko, Inomata-Terada Satomi, Sokejima Shigeru, Maruyama Eiji, Watanabe Soichi, Taki Masao, Ohkubo Chiyoji, Ugawa Yoshikazu
Department of Neurology, The University of Tokyo Hospital, Tokyo, Japan.
Bioelectromagnetics. 2009 Feb;30(2):100-13. doi: 10.1002/bem.20446.
To investigate possible health effects of mobile phone use, we conducted a double-blind, cross-over provocation study to confirm whether subjects with mobile phone related symptoms (MPRS) are more susceptible than control subjects to the effect of electromagnetic fields (EMF) emitted from base stations. We sent questionnaires to 5,000 women and obtained 2,472 valid responses from possible candidates; from these, we recruited 11 subjects with MPRS and 43 controls. There were four EMF exposure conditions, each of which lasted 30 min: continuous, intermittent, and sham exposure with and without noise. Subjects were exposed to EMF of 2.14 GHz, 10 V/m (W-CDMA), in a shielded room to simulate whole-body exposure to EMF from base stations, although the exposure strength we used was higher than that commonly received from base stations. We measured several psychological and cognitive parameters pre- and post-exposure, and monitored autonomic functions. Subjects were asked to report on their perception of EMF and level of discomfort during the experiment. The MPRS group did not differ from the controls in their ability to detect exposure to EMF; nevertheless they consistently experienced more discomfort, regardless of whether or not they were actually exposed to EMF, and despite the lack of significant changes in their autonomic functions. Thus, the two groups did not differ in their responses to real or sham EMF exposure according to any psychological, cognitive or autonomic assessment. In conclusion, we found no evidence of any causal link between hypersensitivity symptoms and exposure to EMF from base stations.
为了研究使用手机可能对健康产生的影响，我们进行了一项双盲交叉激发试验，以确定患有手机相关症状（MPRS）的受试者是否比对照组受试者更容易受到基站发射的电磁场（EMF）的影响。我们向5000名女性发放了问卷，从可能的受试者中获得了2472份有效回复；从中，我们招募了11名患有MPRS的受试者和43名对照组受试者。有四种电磁场暴露条件，每种条件持续30分钟：连续、间歇以及有无噪声的假暴露。受试者在屏蔽室内暴露于2.14GHz、10V/m的电磁场（W-CDMA）中，以模拟全身暴露于基站的电磁场，尽管我们使用的暴露强度高于通常从基站接收到的强度。我们在暴露前后测量了几个心理和认知参数，并监测了自主神经功能。受试者被要求报告他们在实验过程中对电磁场的感知和不适程度。MPRS组在检测电磁场暴露的能力上与对照组没有差异；然而，无论他们是否实际暴露于电磁场，也不管他们的自主神经功能是否有显著变化，他们始终感到更不适。因此，根据任何心理、认知或自主神经评估，两组在对真实或假电磁场暴露的反应上没有差异。总之，我们没有发现任何证据表明过敏症状与暴露于基站的电磁场之间存在因果关系。
