Here, we studied changes in pain sensitivity in rats subjected to low-intensity millimeter-wavelength electromagnetic radiation (EMR MM) of 7.1 mm and 0.1 mW/cm 2 in the occipital-collar region with daily exposure of 30 min over 21 days. As well, this radiation was combined with moderate electromagnetic shielding (EMS) which had the following parameters. The shielding coefficients of the constant component of the magnetic field along the vertical and horizontal constituents were 4.4- and 20-fold, respectively, with an exposure of 22 h/day over 21 days. The pain sensitivity was estimated with algometric tests, that is, the hot plate, flick-tail, and algesimeter-pincher tests; these allowed observation of the pain impulse at different regulatory levels. The algological effects of both individual and combined EMR MM and EMS were demonstrated. It was shown that EMR MM has an antinociceptive property when combined with EMS, as well as a modulation effect caused by shielding during hyperalgesia. At the same time, shielding reduces the antinociceptive effect of EMR MM.

中文翻译：

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低强度毫米波辐射和电磁屏蔽对大鼠疼痛敏感性的影响

在这里，我们研究了在 21 天内每天暴露于 30 分钟的枕领区域受到 7.1 毫米和 0.1 毫瓦/厘米 2 的低强度毫米波电磁辐射 (EMR MM) 的大鼠疼痛敏感性的变化。同样，这种辐射与具有以下参数的中等电磁屏蔽 (EMS) 相结合。沿垂直和水平分量的磁场恒定分量的屏蔽系数分别为 4.4 倍和 20 倍，暴露时间为 22 小时/天，超过 21 天。疼痛敏感性是通过测痛测试来估计的，即热板、甩尾和痛觉计-捏测试；这些允许观察不同调节水平的疼痛冲动。证明了单独和组合 EMR MM 和 EMS 的算法效果。结果表明，当与 EMS 结合时，EMR MM 具有镇痛特性，以及在痛觉过敏期间由屏蔽引起的调节作用。同时，屏蔽降低了 EMR MM 的镇痛作用。