the time between going to bed and sleep onset. Similarly, the term "REM sleep latency" refers to the time between sleep onset and the onset of the first episode of REM sleep. The term "sleep efficiency" refers to the proportion of time in bed that is spent sleeping.
the period of time measured from "lights out," or bedtime, to the commencement of sleep.
The duration of time from “lights out,” or bedtime, to the onset of sleep.
The amount of time from LO to Sleep Onset (SO).
The interval of time between "settling in" to go to sleep and the onset of sleep.
Number of minutes from 'lights-off' or the point at which the subject decides to go to sleep until sleep onset.
the number of minutes it takes for an individual to fall asleep, given the opportunity during a sleep study.
The length of time it takes to go from full wakefulness to the moment of sleep.
In sleep science, sleep latency is the length of time that it takes to go from full wakefulness to falling asleep. During daytime, a sleep latency of 15-25 minutes is considered normal. A shorter sleep latency is likely a sign that the person suffers from sleep deprivation.