沿岸域の波に含まれる超音波が聴覚誘発電位に及ぼす影響に関する研究

抄録

This paper deals with environmental sound of coastal area. Currently, authors are attempting to evaluate coastal area from the view point of wave sound producing from wave break. Recently, in the area of music, it is reported that ultrasonic wave property including ordinal sound affects human brain. Generally, sound can be express by frequency band width and is divided into audible sound (18 Hz to 20 kHz) and inaudible sound (over 20 kHz).

In this paper, in order to examine the effects of ultra -sonic wave to human brain, brain wave behavior by use of ultra-sonic wave in the coastal area, as a sound stimulus , was conducted exposing to subjects. As the results, it was observed that brain wave in Alpha band width of 70 % of subject showed positive. On the other hand, in case of superimposed type of ultra-sonic wave, brain wave of 60 % of subjects were vitalized. This results indicate that in the future, it will be possible to establish new coastal evaluation scale using wave sounds.