Influence of Strong Static Magnetic Field on Bioelectrical Characteristics of Rat Hemidiaphragm Muscle

The bioelectrical changes in the skeletal muscle and nerve-muscle junction of rats exposed to static magnetic field of 200 Gauss for a long periods were investigated in in-vitro conditions. All records were taken intracellularly, by microelectrode technique. It was demonstrated that chronic magnetic field exposure leads to depolarization in the skeletal muscle fiber membrane, and also causes the amplitudes of muscle action potentials and miniature end-plate potentials to decrease significantly. It was also determined that magnetic field leads to similar effects with ketamine, and that both potentiates the effects of each other.