Rapid eye movement sleep

Rarity: Rare

A topic known well beyond its field, found in many languages.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

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Notion

Domain

Science and technology

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What Wikipedia says

Rapid eye movement sleep (REM sleep or REMS) is a unique phase of sleep in all mammals (including humans) and birds and in some reptiles, characterized by random rapid movement of the eyes, accompanied by low muscle tone throughout the body, and the propensity of the sleeper to dream vividly.

Excerpt from the Wikipedia article “Rapid eye movement sleep”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: MrSandman at English Wikipedia, Public domain, via Wikimedia Commons.