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Sleep has a significant role to maintain our health. However, people havestruggled with sleep induction because of noise, emotion, and complicatedthoughts. We hypothesized that there was more effective auditory stimulation toinduce sleep based on their mental states. We investigated five auditorystimulation: sham, repetitive beep, binaural beat, white noise, and rainysounds. The Pittsburgh sleep quality index was performed to divide subjectsinto good and poor sleep groups. To verify the subject's mental states betweeninitiation of sessions, a psychomotor vigilance task and Stanford sleepinessscale (SSS) were performed before auditory stimulation. After auditorystimulation, we asked subjects to report their sleep experience during auditorystimulation. We also calculated alpha dominant duration that was the periodthat represents the wake period during stimulation. We showed that there wereno differences in reaction time and SSS between sessions. It indicated sleepexperience is not related to the timeline. The good sleep group fell asleepmore frequently than the poor sleep group when they hear white noise and rainysounds. Moreover, when subjects failed to fall asleep during sham, mostsubjects fell asleep during rainy sound (Cohen's kappa: -0.588). These resultshelp people to select suitable auditory stimulation to induce sleep based ontheir mental states.

Possibility of Sleep Induction using Auditory Stimulation based on Mental States