A multiple sleep latency test (MSLT), also known as a daytime nap opportunity study, is a sleep study that measures excessive daytime sleepiness. The test evaluates how fast you fall asleep in a quiet ...

Sleep latency, or sleep onset latency, is the time it takes for you to go from being fully awake to sleeping. Sleep latency and the time it takes to reach rapid eye movement sleep (REM sleep) are ...

Sleep latency — also called sleep onset latency — is the amount of time it takes you to go from being fully awake to sleeping. Sleep latency varies from person to person. Your sleep latency and how ...