Belova N A, Ermakov A M, Znobishcheva A V, Skrebnitskaia L K, Lednev V V
Biofizika. 2010 Jul-Aug;55(4):704-9.
The influence of extremely weak alternating magnetic fields (EW AMF) directed colinearly to the static Earth magnetic field on the rate of regeneration of planarians and the rate of gravitropic response in the stem segments of flax has been studied. The value of bioeffects of EW AMF is determined by the parameter gamma B(AC)/f, where y is the gyromagnetic ratio of the magnetic moments induced by the orbital movements of electrons in atoms, and B(AC) and f correspond to magnetic induction and frequency of the alternating magnetic component. It was shown that the magnitude of bioeffects depends on the amplitude (at fixed 1000 Hz - frequency) and frequency (at fixed 192 nT - amplitude) of the alternating component. Maxima of bioeffects are observed at gamma B(AC)/f = 0.9; 2.75, and minor maxima gamma B(AC)/f = 4.5; 6.1. The bioeffects are absent at gamma B(AC)/f = 1.8, 3.8, 5.3, 6.7. The positions of the maxima and minima of bioeffects correspond to the theoretical prediction (at gamma = 14000 Hz/microT). Primary targets for the EW AMF of this type are the magnetic moments induced by the orbital movements of electrons in atoms.
研究了与地磁场方向共线的极弱交变磁场（EW AMF）对涡虫再生速率以及亚麻茎段重力反应速率的影响。EW AMF的生物效应值由参数γB(AC)/f决定，其中γ是原子中电子轨道运动所感应磁矩的旋磁比，B(AC)和f分别对应交变磁分量的磁感应强度和频率。结果表明，生物效应的大小取决于交变分量的幅度（频率固定为1000Hz时）和频率（幅度固定为192nT时）。在γB(AC)/f = 0.9；2.75时观察到生物效应的最大值，在γB(AC)/f = 4.5；6.1时观察到较小的最大值。在γB(AC)/f = 1.8、3.8、5.3、6.7时没有生物效应。生物效应最大值和最小值的位置与理论预测相符（γ = 14000Hz/μT时）。此类EW AMF的主要作用靶点是原子中电子轨道运动所感应的磁矩。
