Effect of ELF Electric and Magnetic Fields Exposure in Consideration of the Japanese Technology Standard of the Electric Installation on the EEG Spectra of Human

The purpose of this study was to investigate the effect of ELF (Extremely Low Frequency) electric and magnetic fields (EMF) exposure on the EEG (Electroencephalograph) of human. In this study 4 healthy-male-volunteers were exposed for 30 min to 60-Hz EMF at 30 V/cm emitted from the high voltage transformer. The electric field strength emitted from the aerial power line was defined to be below 30V/cm at 1 meter above the ground and the magnetic field strength was not defined, according to the provision of the 27th article of " the Japanese technology-standard of the electric installation" established by the Ministry of International Trade and Industry. Prior to participation in the EMF exposure, each volunteer was given a complete description of the purpose and character of the investigation. The EEG of the volunteers were recorded based on the international 10-20 system before and after the EMF exposures and analyzed by the Fourier Transform and the Wavelet Transform. The result of this paper indicated that no direct effects on the frequencyspectra by the Fourier Transform and the dynamic-spectra by the Wavelet Transform of the EEG were seen before and after EMF exposures.