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There are 4 non-REM stages and REM sleep.
Tongue by REM
Usually, rem would mean "remaining", as in, "for all remaining stitches" etc.
Yes
episodic and semantic
REM could mean Rapid Eye Movement, R.E.M the pop group, or it could mean the website - more information required
Sleep is prompted by natural cycles of activity in the brain and consists of two basic states: rapid eye movement (REM) sleep and non-rapid eye movement (NREM) sleep, which consists of Stages 1 through 4. During sleep, the body cycles between non-REM and REM sleep. Typically, people begin the sleep cycle with a period of non-REM sleep followed by a very short period of REM sleep. Dreams generally occur in the REM stage of sleep. Then the cycle repeats all over again.
There are 7: Distress Active Alert Alert Inactive Drowsiness Periodic sleep REM sleep Non-REM sleep
Rapid Eye Movement
Sleepwalking usually only occurs during stage 3 of non-rem sleep.
Very long and slow A+
Yes, it is possible to experience dreams during non-REM (NREM) sleep, although they are typically less vivid and less memorable than those that occur during REM sleep. NREM sleep consists of different stages, and dreaming may happen primarily during the lighter stages of sleep. However, most vivid and narrative-driven dreams are associated with REM sleep.