Search on: SLEEP STAGES 
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Descriptor English:   Sleep Stages 
Descriptor Spanish:   Fases del Sueño 
Descriptor Portuguese:   Fases do Sono 
Synonyms English:   Drowsinesses
Sleep Stage
Stage, Sleep
Stages, Sleep
Drowsiness  
Tree Number:   F02.830.855.796
G11.561.803.754
Definition English:   Periods of sleep manifested by changes in EEG activity and certain behavioral correlates; includes Stage 1: sleep onset, drowsy sleep; Stage 2: light sleep; Stages 3 and 4: delta sleep, light sleep, deep sleep, telencephalic sleep. 
History Note English:   72(69) 
Allowable Qualifiers English:  
DE drug effects ES ethics
GE genetics IM immunology
PH physiology RE radiation effects
Record Number:   13277 
Unique Identifier:   D012894 

Occurrence in VHL:
 

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