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Professional Technical IVT

sleep latency onset REM

The time interval from sleep onset to the first appearance of REM sleep, typically measured in minutes.

Full Definition

Sleep latency onset REM refers to the duration from the moment a patient falls asleep to when the first REM (Rapid Eye Movement) sleep period begins. In healthy adults, this interval typically ranges from 60-90 minutes, but can be significantly shortened in conditions like narcolepsy or depression. Sleep medicine physicians use this measurement to diagnose sleep disorders and assess sleep architecture quality. Abnormally short REM latency (less than 15 minutes) is considered pathological and may indicate underlying sleep pathology or psychiatric conditions.

Usage

Usage note: Often confused with general sleep onset latency; editors should ensure the REM component is clearly specified when this measurement is referenced.

In Context

  • "The patient exhibited a sleep latency onset REM of 8 minutes, suggesting possible narcolepsy." — Sleep study report
  • "Normal sleep latency onset REM should exceed 60 minutes in healthy individuals." — Clinical documentation

Also known as

REM onset latency REM latency

Contrasted with

REM sleep deprivation REM suppression

Don't confuse with

sleep onset latency REM sleep onset period
sleep latency ← Back to glossary sleep maintenance insomnia

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