Effects of exposure to magnetic fields on small laboratory animals for wireless power transmission to an implantable locomotion meter

Abstract

　Electromagnetic waves are used in several applications; however many unanswered questions remain about the effects of electromagnetic waves on living organisms. One of the investigations of such biological effects is the evaluation of behavior when a living body is exposed to electromagnetic waves. A previous study shows that a magnetic field with a frequency of 400 kHz, field strength of 1 A/m, and an exposure time of 1 hour had no effect on the behavior of small laboratory animals (mice). In the present study, we investigated the effect of longer irradiation time than before. Mice with a locomotion meter implanted in their back were placed in a cage that generated magnetic field. Spontaneous locomotion and body temperature of mice were measured. Then we compared the results with spontaneous locomotion and body temperature in the absence of magnetic field exposure. As a result, the magnetic field reduced the spontaneous locomotion of mice and increased body temperature.