Normal sleep

Sleep stages, how sleep is regulated and how it changes with age.

4 pages

Concept

• How sleep is regulated: sleep pressure, the circadian clock and melatoninTwo forces decide when people sleep: pressure to sleep that builds the longer they are awake…
• Normal sleep across the life spanNewborns sleep most of the day with half of it in REM; deep sleep peaks in childhood and fades…
• Sleep stages and their EEGA night of sleep is a series of 90-minute cycles of light sleep, deep sleep and dream (REM)…

Technique

• Sleep hygiene and the behavioral treatment of insomniaRegular habits help sleep, but chronic insomnia responds best to cognitive behavioral therapy…

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← Medical psychology and behavioral science

Educational content on behavior and the clinical relationship; not a diagnostic or treatment guide and no substitute for assessment by a health professional. If you or someone near you is at risk, seek help now from an emergency service or a mental-health helpline.

Representative model, for educational purposes only.