Auditory stimulation during deep sleep enhances total slow-wave activity in a young cohort: A feasibility trial.

Cognitive, metabolic and sleep benefits associated with enhancement of sleep slow waves using closed-loop auditory stimulation have been reported in adults but not in adolescents, especially in home settings. Seventeen volunteers (10F/7M; age range: 13-18 years old) participated in a 2-week, single-blind, crossover study. STIM (auditory stimulation ON) and SHAM (auditory stimulation at zero-volume) were each applied for a week (randomized order).

Validation and performance of the sleep inertia questionnaire in central disorders of hypersomnolence.

Background: Optimal measurement tools for problematic sleep inertia, common in some central disorders of hypersomnolence (CDH), have not yet been determined. We evaluated the performance of the Sleep Inertia Questionnaire (SIQ) in CDH, and how well it distinguished hypersomnolent groups from controls, and IH (idiopathic hypersomnia) from narcolepsy type 1 (NT1).

Methods: This prospective, bi-centric study included 63 control, 84 IH, 16 NT1, 18 narcolepsy type 2 (NT2), and 88 subjective excessive daytime sleepiness (sEDS) participants, using ICSD-3 criteria.