Abstract
In order to clarify the activity of magnetic fields on their frequency against the body, inhibitory activity against vasomotion of mouse skin arterioles was observed using a intravital-microscope afler exposing the mouse whole body to 0.46 mT magnetic fields of extremely low frequency (ELF-MF: 25, 50 and 100 Hz) and direct current (DC-MF) which are approximately 10 times as strong as terrestrial magnetism. No inhibitory activity was observed in ELF-MF at 25 Hz though the activity was clearly observed in ELF-MF at 50 Hz and DC-MF. Only weak inhibitory activity was found in ELF-MF at 100 Hz.
