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2. Rapid eye movement sleep - Wikipedia

   en.wikipedia.org/wiki/Rapid_eye_movement_sleep

   Rapid eye movement sleep (REM sleep or REMS) is a unique phase of sleep in mammals (including humans) and birds, characterized by random rapid movement of the eyes, accompanied by low muscle tone throughout the body, and the propensity of the sleeper to dream vividly. The core body and brain temperatures increase during REM sleep and skin ...

3. Rapid eye movement sleep behavior disorder - Wikipedia

   en.wikipedia.org/wiki/Rapid_eye_movement_sleep...

   RBD is a sleep disorder characterized by the loss of normal skeletal muscle atonia during REM sleep and is associated with prominent motor activity and vivid dreaming. [6] [2] These dreams often involve screaming, shouting, laughing, crying, arm flailing, kicking, punching, choking, and jumping out of bed.

4. Night terror - Wikipedia

   en.wikipedia.org/wiki/Night_terror

   Adults who have experienced sexual abuse are more likely to receive a diagnosis of sleep disorders, including night terrors. [29] Overall, though, adult night terrors are much less common and often respond best to treatments that rectify causes of poor quality or quantity of sleep.

5. Rhythmic movement disorder - Wikipedia

   en.wikipedia.org/wiki/Rhythmic_movement_disorder

   Other sleep related disorders like sleep apnea are ruled out by examining the patients' respiratory effort, air flow, and oxygen saturation. RMD patients often show no abnormal activity that is directly the result of the disorder in an MRI scan. [7] RMD episodes are strongly associated with stage 2 NREM sleep and, specifically, K Complexes [8].

6. Neuroscience of sleep - Wikipedia

   en.wikipedia.org/wiki/Neuroscience_of_sleep

   NREM Stage 1 (N1 – light sleep, somnolence, drowsy sleep – 5–10% of total sleep in adults): This is a stage of sleep that usually occurs between sleep and wakefulness, and sometimes occurs between periods of deeper sleep and periods of REM. The muscles are active, and the eyes roll slowly, opening and closing moderately.

7. Confusional arousal - Wikipedia

   en.wikipedia.org/wiki/Confusional_arousal

   A confusional arousal (also known as sleep drunkenness or severe sleep inertia) is medical condition where a person awakened from sleep shows mental confusion for at least several minutes. [ 1 ] [ 2 ] Complete or partial amnesia of the episodes may be present.