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Results 1 - 1 of 1 for NREM
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  1. Polysomnography 
    ... this stage of sleep. Non-rapid eye movement (NREM) sleep. NREM sleep is divided into three stages that can ... by brain waves (EEG). REM sleep alternates with NREM sleep about every 90 minutes. A person with ...
    https://medlineplus.gov/ency/article/003932.htm - Medical Encyclopedia