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sleep stages

sleep stages Sleep stages are distinct periods within sleep that are identified by patterns of brain-wave activity and related behavior.

Sleep stages are distinct periods within sleep that are identified by patterns of brain-wave activity and related behavior. They are now commonly grouped as N1 and N2 for sleep onset and light sleep, N3 for slow-wave sleep, and REM sleep.

Sources

Drafting source: U.S. National Library of Medicine. Medical Subject Headings (MeSH), 2026 descriptor edition. “Sleep Stages” (D012894).
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PsychTerms (psychterms.org), CC BY 4.0, version 1. “sleep stages.” Development preview.

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sleep stages

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Sources

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