Sleep latency

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Sleep Latency

Sleep latency (pronunciation: /sli:p 'lætənsi/) is a term used in sleep science to describe the length of time that it takes for an individual to transition from full wakefulness to sleep.

Etymology

The term "sleep latency" is derived from the Latin word "latens" which means "lying hidden". In this context, it refers to the period of time that lies hidden between being awake and being asleep.

Definition

Sleep latency is typically measured in minutes and is often used as an indicator of sleep deprivation or sleep disorders. It is one of the parameters measured in a polysomnography, a type of sleep study. A normal sleep latency is approximately 10-20 minutes.

Related Terms

  • Sleep onset: The transition from wakefulness to sleep. Sleep latency is the time it takes to reach sleep onset.
  • Sleep efficiency: The percentage of time spent in bed actually sleeping. Sleep latency is a factor in calculating sleep efficiency.
  • Insomnia: A sleep disorder characterized by difficulty falling asleep or staying asleep. Insomnia can result in prolonged sleep latency.
  • Hypersomnia: A condition characterized by excessive sleepiness. Hypersomnia can result in shortened sleep latency.

See Also

External links

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