University of Zürich
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Institute of Pharmacology and Toxicology
Section of Psychopharmacology and Sleep Research
The processes underlying sleep regulation
This figure shows the homeostatic, circadian
and ultradian processes underlying sleep regulation.
W: Waking
S: Sleeping
N: NonREM sleep
R: REM sleep
(See
Glossary
)
Last update: 07. 06. 2000,
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Institute of Pharmacology and Toxicology