Weak Environmental Magnetic Fields Inhibit Spontaneous Bioelectrical Activity in Snail Neurons

摘要

The interest in the evaluation of health effects due to EMF has accelerated in the last decades, mostly motivated by the occupational and environmental exposures to humans by such non-ionizing fields. The increasing exposure to electromagnetic fields has been suspected to contribute to the rising incidence of cancer in industrialized countries Despite detailed analysis which provide a wealth of accurate data on the effects of electromagnetic fields on nerve cells, a clear pictures of the mechanism and sites of action of ELF magnetic field in the range of environmental intensities is far from being accomplished and the ionic or metabolic processes underlying the observed effects have not been fully explained. The aim of this study was to evaluate the effects of 50 Hz magnetic fields in the range of environmental intensities on spike and neuronal excitability in snail neurons. We measured the bioelectric parameters of Fl neuron with the conventional intracellular recording in current clamp mode.