Akoev G N, Avelev V D, Semenjkov P G
Pavlov Institute of Physiology, Russian Academy of Sciences, St Petersburg.
Neuroscience. 1995 May;66(1):15-7. doi: 10.1016/0306-4522(95)00054-m.
Low intensity millimeter-wave electromagnetic radiation of less than 10 mW cm-2 power intensity has a nonthermal effect on the body and it is widely used in medical practice for treatment of various diseases. Nevertheless, the effect of EMR on biological tissues is not understood. The skin and its sensory receptors are considered to be responsible for EMR reception, but this has yet to be confirmed. The present experiments were designed to study the effect of millimeter-wave electromagnetic radiation on the ampullae of Lorenzini in skates, which are very sensitive to weak electrical stimuli at low frequency. Reception of low-intensity millimeter-wave electromagnetic radiation at 37-55 GHz by the electroreceptors (ampullae of Lorenzini) in the skate has been shown. At a power intensity of 1-5 mW cm-2 irradiating the duct opening at 1-20 mm distance caused a transient increase in the firing rate of a single afferent unit. When the power intensity was increased inhibitory responses were also observed. Some receptors responded with a prolonged excitatory activity lasting up to 30 min to the irradiation of the duct opening. Direct irradiation of the sensory cells produced only an inhibition, probably due to a rise in temperature. It is proposed that millimeter-wave electromagnetic radiation generates a d.c. potential at the vicinity of duct opening which can be detected by the electroreceptors.
功率强度小于10 mW/cm²的低强度毫米波电磁辐射对人体具有非热效应，并且在医学实践中被广泛用于治疗各种疾病。然而，电磁辐射对生物组织的影响尚不清楚。皮肤及其感觉受体被认为是电磁辐射的接收部位，但这一点尚未得到证实。本实验旨在研究毫米波电磁辐射对鳐鱼洛伦兹壶腹的影响，鳐鱼的洛伦兹壶腹对低频弱电刺激非常敏感。已证明鳐鱼的电感受器（洛伦兹壶腹）能够接收37 - 55 GHz的低强度毫米波电磁辐射。当以1 - 5 mW/cm²的功率强度在1 - 20 mm的距离照射导管开口时，单个传入单元的放电频率会出现短暂增加。当功率强度增加时，也观察到了抑制反应。一些感受器对导管开口的照射会产生持续长达30分钟的延长兴奋活动。对感觉细胞的直接照射仅产生抑制作用，可能是由于温度升高所致。有人提出，毫米波电磁辐射会在导管开口附近产生直流电位，电感受器可以检测到该电位。
