Evaluation of Experimental Small Animal Behavior by Exposure to Magnetic Fields for Wireless Power Transmission to an Implantable Locomotion Meter

Abstract

　In the fields of neurophysiology and behavioral psychology, the activity of small laboratory animals has been measured as part of animal experiments. Implantable activity meters are useful for this purpose, however they use batteries, making it difficult to record for long periods of time, and their weight and dimensions cause stress on the animals. A wireless power transmission system is useful for this purpose. To realize this system, it is essential to supply power from the power transmission coil to the locomotion meter embedded in the small animal. In this process, exposure of the body to magnetic fields is inevitable. In this study, we evaluated the behavior of experimental small animals exposed to magnetic fields at frequencies and magnetic field strengths that have been investigated for wireless power transmission as a power supply method to implantable locomotion meters. As a result, there was no effect on the living body.