Abstract
Industrial products make various sounds, and the sounds cause people comfortable or uncomfortable. In our study, we measure the brain activation response using near-infrared spectroscopy (NIRS) and quantify senses of discomfort about the sounds. In this paper, we describe the measurement of the brain activation response using NIRS when the subjects listen to familiar tunes and sounds of sine wave. The results show that the oxy-Hb in the frontal cortex declined when the subjects listened familiar tunes. The results also indicate that the oxy-Hb of the temporal cortex increased in the left hemisphere or right hemisphere.
