Abstract
The purpose of this study was to investigate the effect of inaudib le high-frequency sounds on the spontaneous electroencephalogram (EEG) in the anechoic chamber. Nine male subjects (age range: 21-26 years) are exposed to inaudible high -frequency sounds for 4min with and without white -noise. On comparing the relative EEG output in the 2-3 min during the exposure with resting state, CILI (8-10Hz) of O1, 02 were significantly increased, while P1 (13-20Hz) of Fpl, Fp2, F7, F8, O1, O2 were significantly decreased. These results suggest that the inaudible high -frequency sounds may decrease the brain activity.
