Stages of Sleep: REM and Non-REM Sleep Cycles

Stages of Sleep: REM and Non-REM Sleep Cycles

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日期:2025-05-28
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 ...看更多