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Sleep Stages MeSH Descriptor Data 2022


MeSH Heading
Sleep Stages
Tree Number(s)
F02.830.855.796
G11.561.803.754
Unique ID
D012894
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D012894
Scope Note
Periods of sleep manifested by changes in EEG activity and certain behavioral correlates; they formerly included Stage 1: sleep onset, drowsy sleep; Stage 2: light sleep; Stages 3 and 4: delta sleep, light sleep, deep sleep, telencephalic sleep. In 2007, sleep stages were redefined by The American Academy of Sleep Medicine (AASM) as: N1-N2 (sleep onset - light sleep), N3 (SLOW-WAVE SLEEP), and REM SLEEP.
Entry Term(s)
N1-Sleep
N2-Sleep
NREM Stage 1
NREM Stage 2
NLM Classification #
WL 108
Previous Indexing
Sleep (1966-1968)
Public MeSH Note
1972
History Note
1972 (1969)
Date Established
1972/01/01
Date of Entry
1999/01/01
Revision Date
2018/04/09
Sleep Stages Preferred
N1-Sleep Narrower
N2-Sleep Narrower
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