SLEEP · 2022 · 33 citations · 52 references
ORP, a novel EEG-derived metric, measured during wake periods predicts poor sleep quality in two independent cohorts. Consistent with insomnia symptomatology of poor perceived sleep in the absence of excessive daytime sleepiness, ORPwake may provide valuable objective mechanistic insight into physiological hyperarousal.
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A New Method for Measuring Daytime Sleepiness: The Epworth Sleepiness Scale
Murray W. Johns · SLEEP · 1991 · 16.8K citations · Full text
Reliability and Factor Analysis of the Epworth Sleepiness Scale
Murrayb W. Johns · SLEEP · 1992 · 2.1K citations · Full text