Slow-oscillatory Galvanic Vestibular Stimulation promotes sleep in healthy young adults

Abstract Introduction: It has been well known that rocking promotes sleep in animals and humans. Here, we examined the effects of slow-oscillatory galvanic vestibular stimulation (GVS), which can evoke virtual sensation brain, on architecture as objective subjective quality healthy young adults. Methods: We studied 14 subjects (age: 22.7 ± 1.4 years) who underwent 3 nap conditions (adaptation, sham [SHAM], [STIM]; 90 min for all), where SHAM STIM were randomly allocated with a 1-week interval. The polysomnographic recordings started at 2 pm. In both conditions, electrodes placed mastoids GVS; condition, (0.25 Hz sinusoidal) GVS was applied throughout period current intensity approximately 80% sensory thresholds each subject. pattern center pressure during quiet standing also measured using force plate, or without same GVS. analyzed variables electroencephalographic (EEG) spectral power compared them between SHAM. Subjective Results: confirmed subsensory induced body sway corresponding to frequency all subjects. found latency significantly shorter total time N2 duration longer than EEG spectrum densities delta, theta, sigma bands greater better Conclusion: demonstrated promoted improved quality. This finding may open new avenue toward development novel techniques human augmentation. Support: JST PRESTO (JPMJPR19J3) JSPS KAKENHI (21K11545) AK. Research Category Technology Methods Clinical Research: 13. Other Brain Stimulation Keywords: GVS,