Frequency resonance effect of neurons under low-frequency weak magnetic field

Abstract We report on the frequency resonance effect observed in single neurons of mollusc Helix brain under low-frequency B =1 mT magnetic fields of frequency f M =0.1–80 Hz. The dependence of the firing frequency f with f M decreases as a Lorentzian, centered about the spontaneous, f 0 one (“window effect”). An explanation is provided based on the superdiamagnetism and Ca 2+ coulomb explosion model, supplemented by the Ca 2+ kinetics towards the Ca 2+ -dependent K + channels, opening them. The Ca 2+ ion diffusion time is obtained.