REM is the sleep cycle stage when dreaming occurs. Rapid eye movement "dream sleep" occurs cyclically about every 90 minutes in between the other "dreamless" stages of non-REM (NREM) sleep. Source: ...
Non-rapid eye movement (NREM) sleep arousal disorders involve repeated episodes of incomplete awakening from sleep, most commonly sleepwalking or night terrors (also known as sleep terrors), but ...
Non-rapid eye movement (NREM) parasomnias involve disordered sleep-related behaviors that occur during the first few hours of sleep. Common treatment options typically include medication and ...
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