0272 BINAURAL BEATS AT SLOW FREQUENCIES LESS THAN 1 HZ MAY INDUCE SLOW-WAVE SLEEP FASTER

Abstract Introduction Binaural beats are an auditory phenomenon when two sounds with a certain frequency difference transmitted simultaneously to each ear, one perceives beat exactly equal that difference. Previous studies have shown binaural synchronize neural oscillations and induce related brain states behaviors. One previous study showed listening at 1 Hz during naps increased the duration of slow-wave sleep. However, effect in slow range (< Hz) on sleep is poorly understood. Methods We hypothesized 0.25 Hz-binaural could thus enhance by shortening its latency lengthening duration. Twelve healthy subjects (six females, 25.3 ± 2.6 years) were included this study. The experiment consisted four 90-minute afternoon naps, including sham condition (no acoustic stimulation) three binaural-beat conditions (0 Hz, 250 carrier tone. Participants not informed these conditions. Auditory stimuli delivered through headphones continued throughout nap. Results results had shorter latencies for both N2 N3 than stimulus condition. Conclusion This suggests frequencies, such as may faster individuals. Support (if any) KYOCERA Corporation, Japan, AMED (Grants No. JP21zf0127005), World Premier International Research Center Initiative (WPI), MEXT, Japan.