Sleep Medicine Overview

Principles

Definition

Sleep medicine is a medical specialty and scientific field dedicated to the study of sleep across the lifespan, encompassing its physiological processes and associated disorders. It investigates the mechanisms of sleep-wake regulation, the pathophysiology of sleep disturbances, and focuses on the diagnosis, treatment, and prevention of conditions that impair sleep and daytime function, aiming to improve overall health and well-being.

Ontological type

Core Disorders

Diagnostic Methods

Therapeutic Approaches

Key developments

Key Figures

Physiological Sleep Characterization era

William C. Dement [1] (Stanford University [3], University of Chicago [4]) was a pioneering figure in physiological sleep characterization during the 1963–1987 era. He advanced REM–NREM staging and adaptation/deprivation paradigms, with key contributions illustrated by Quantification of Sleepiness: A New Approach [6], Cumulative Effects of Sleep Restriction on Daytime Sleepiness [7], and Sleep fragmentation in the elderly: Relationship to daytime sleep tendency [8], establishing metrics that linked sleep stages to daytime performance and mood and setting methodological standards for sleep research. Mary A. Carskadon [2] conducted her work across Stanford University [3] and Brown University [5] during this era, contributing to the maturation of sleepiness assessment and developmental chronobiology. Her contributions to standardizing sleepiness measurement are exemplified by Guidelines for the Multiple Sleep Latency Test (MSLT): A Standard Measure of Sleepiness [9], and by integrating findings on daytime sleepiness with sleep restriction, as in Cumulative Effects of Sleep Restriction on Daytime Sleepiness [7], actions that solidified clinical and laboratory tools for this era.

Measurement and Diagnostic Standardization era

Charles F. Reynolds [1] was affiliated with Harvard University [3] and Johns Hopkins University [4] during the Measurement and Diagnostic Standardization era. His key contribution in this era was introducing The Pittsburgh sleep quality index: A new instrument for psychiatric practice and research [7] as a standardized tool for sleep quality assessment, which enabled cross-study comparability. Sonia Ancoli‐Israel [2] was affiliated with University of California, San Francisco [5] and University of California, San Diego [6] during this era. Her contributions include The American Academy of Sleep Medicine (AASM) Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications [8] and Sleep disturbances and chronic disease in older adults [9], both foundational for standardized scoring rules and terminology and for linking sleep health to aging.

Population-level Sleep Health era

Terry Young [1] is a sleep researcher linked to University of Wisconsin–Madison [3] and University of Toronto [4] in the Population-level Sleep Health era. His key contributions in this era include highlighting the increased prevalence of sleep-disordered breathing in adults [7], a finding that underscored population burden and influenced screening and guideline development. Michael A. Grandner [2] is associated with Johns Hopkins University [5] and the University of Pennsylvania [6] in this era. His core contributions include the 2015 joint consensus on Recommended Amount of Sleep for a Healthy Adult [8], the 2009 Mortality associated with short sleep duration [9], and the 2010 Who gets the best sleep? Ethnic and socioeconomic factors related to sleep complaints [10], advances that helped operationalize sleep health as a public health target.