Partial paralysis can also occur in the REM stage of sleep (see:Sleep paralysis).

Both slow-wave and REM (rapid eye movement) stages of sleep may contribute to this process, via not-yet-understood mechanisms.

REM stages play a role in learning ( 1:55 )

(Indeed, newborn kittens are observed to spend all of their sleep time in the REM stage.)

Make sure you stay asleep for 60 to 90 minutes, long enough to go into the REM stage.

Dreams are successions of images, ideas, emotions, and sensations that occur involuntarily in the mind during certain stages of sleep (mainly the REM stage).

Most REM stages last 90-100 minutes, and the average human will go through 4-6 of these stages during sleep each night.

Forgive me while I enter my REM stage of sleep.

The vestibular nuclei in particular has been identified as being closely related to dreaming during the REM stage of sleep.

Dreams generally occur in the REM stage of sleep.