Non-rapid eye movement (NREM) sleep-- A type of sleep that differs from rapid eye movement (REM) sleep. The four stages of NREM sleep account for 75-80% of total sleeping time.
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Rapid Eye Movement
REM (Rapid Eye Movement) sleep is active sleep.
The deepest stage of sleep is REM or Rapid Eye Movement.
REM
R.E.M Rapid Eye Movement
Rapid eye movement is associated with dreams in the early hours of the morning.
R.E.M. Or rapid eye movement is a sign of deep sleep.
REM stands for rapid eye movement.
REM stands for Rapid Eye Movement and signifies the deepest stage of sleep.
Restless eye movement
The deepest stage of sleep is REM or Rapid Eye Movement.