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Behavioral Disciplines and Activities > Behavioral Sciences > Psychophysiology > Sleep > Sleep Stages
Psychological Phenomena > Psychophysiology > Sleep > Sleep Stages
... > Natural Science Disciplines > Biological Science Disciplines > Physiology > Psychophysiology > Sleep > Sleep Stages
Musculoskeletal and Neural Physiological Phenomena > Nervous System Physiological Phenomena > Sleep > Sleep Stages

Preferred term

Sleep Stages  

Type

  • Topical Descriptor

Broader concept

Narrower concepts

Related concepts

Entry terms

  • N1 Sleep
  • N1-Sleep
  • N2 Sleep
  • N2-Sleep

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.

History note

  • 1972 (1969)

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URI

http://www.yso.fi/onto/mesh/D012894

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