[Durgical](https://durgical.com/en/) › [DurgiPedia](https://durgical.com/en/durgipedia/) › [Behavioral science](https://durgical.com/en/behavioral-science/) › Normal sleep

# 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 melatonin** Two forces decide when people sleep: pressure to sleep that builds the longer they are awake…](https://durgical.com/en/behavioral-science/how-sleep-is-regulated-sleep-pressure-the-circadian-clock-and-melatonin/)
- [**Normal sleep across the life span** Newborns sleep most of the day with half of it in REM; deep sleep peaks in childhood and fades…](https://durgical.com/en/behavioral-science/normal-sleep-across-the-life-span/)
- [**Sleep stages and their EEG** A night of sleep is a series of 90-minute cycles of light sleep, deep sleep and dream (REM)…](https://durgical.com/en/behavioral-science/sleep-stages-and-their-eeg/)

## Technique

- [**Sleep hygiene and the behavioral treatment of insomnia** Regular habits help sleep, but chronic insomnia responds best to cognitive behavioral therapy…](https://durgical.com/en/behavioral-science/sleep-hygiene-and-the-behavioral-treatment-of-insomnia/)

## A to Z

- [A](https://durgical.com/en/behavioral-science/a-z/a/)
- [B](https://durgical.com/en/behavioral-science/a-z/b/)
- [C](https://durgical.com/en/behavioral-science/a-z/c/)
- [D](https://durgical.com/en/behavioral-science/a-z/d/)
- [E](https://durgical.com/en/behavioral-science/a-z/e/)
- [F](https://durgical.com/en/behavioral-science/a-z/f/)
- [G](https://durgical.com/en/behavioral-science/a-z/g/)
- [H](https://durgical.com/en/behavioral-science/a-z/h/)
- [I](https://durgical.com/en/behavioral-science/a-z/i/)
- [K](https://durgical.com/en/behavioral-science/a-z/k/)
- [L](https://durgical.com/en/behavioral-science/a-z/l/)
- [M](https://durgical.com/en/behavioral-science/a-z/m/)
- [N](https://durgical.com/en/behavioral-science/a-z/n/)
- [O](https://durgical.com/en/behavioral-science/a-z/o/)
- [P](https://durgical.com/en/behavioral-science/a-z/p/)
- [R](https://durgical.com/en/behavioral-science/a-z/r/)
- [S](https://durgical.com/en/behavioral-science/a-z/s/)
- [T](https://durgical.com/en/behavioral-science/a-z/t/)

[← Medical psychology and behavioral science](https://durgical.com/en/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.

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Source: https://durgical.com/en/behavioral-science/areas/sleep/
License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Cite as: DurgiPedia (durgical.com), https://durgical.com/en/behavioral-science/areas/sleep/