sleep phase
Slumber cycle segment
Sleep phase refers to the timing of a person's natural sleep-wake cycle relative to the clock.
Someone with a delayed sleep phase naturally falls asleep and wakes late; an advanced sleep phase means sleeping and rising unusually early.
Her delayed sleep phase made early classes impossible.
The term appears often in discussions of circadian rhythm disorders.
- REMAcronym for dreaming phase
- deepFar from surface
- cycleRepeating sequence of events
- circadianDaily biological cycle
- dreamingMental imagery during slumber
light · drowsy · twilight · stage · rhythm · night owl · delta · theta · brainwaves · napping · power nap · drifting · restless · waking · slumber · nocturnal · melatonin · torpor