Analysis of Physiological Changes in Human Caused by Local Exposure of ELF Electric Field

To clarify the mechanism of the biological effects of ELF electric fields on a human body, we have investigated the physiological changes precisely caused by the local exposure of the field. The temporal changes in skin temperature, skin blood flow, and other physiological parameters were measured when a left forearm was exposed to the field. As a result, noticeable changes were observed in the peripheral skin temperature in the field exposure. Further, some other effects were observed through the experiments, and they suggested that the mechanism of the field exposure was associated with body hair vibration and autonomic nerve activity.