2024 Volume 32 Issue 1 Pages 231-236
In recent years, IH cooker have become widely used in general households. However, there have been reports of cases in which IH cooker generate high-frequency noise outside the audible range with a very high sound pressure level of approximately 100 dB, causing discomfort to the human body. The ultimate goal of this study is to propose a method for reducing and improving the discomfort caused by the ultrasonic exposure problem of IH cooker. Among biological signals, we focused on electroencephalography as an evaluation index of discomfort. First, we confirmed the changes in the subject's electroencephalography during the use of the IH cooker. Then, to eliminate external factors other than ultrasonic exposure, we conducted the same experiment with high-frequency noise outside the audible range emitted from a loudspeaker. The results suggest that electroencephalography is useful as an evaluation index of discomfort.
