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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. REM rebound - Wikipedia

    en.wikipedia.org/wiki/REM_rebound

    REM rebound is the lengthening and increasing frequency and depth of rapid eye movement (REM) sleep which occurs after periods of sleep deprivation.When people have been prevented from experiencing REM, they take less time than usual to attain the REM state. [1]

  4. Perceptual learning - Wikipedia

    en.wikipedia.org/wiki/Perceptual_learning

    Perceptual learning is learning better perception skills such as differentiating two ... [59] Both slow-wave and REM (rapid eye movement) stages of sleep may ...

  5. Sleep - Wikipedia

    en.wikipedia.org/wiki/Sleep

    Sleep is divided into two broad types: non-rapid eye movement (non-REM or NREM) sleep and rapid eye movement (REM) sleep. Non-REM and REM sleep are so different that physiologists identify them as distinct behavioral states. Non-REM sleep occurs first and after a transitional period is called slow-wave sleep or deep sleep.

  6. 6 Signs You've Got "Sleep Debt" (& How To Finally Pay It Off)

    www.aol.com/6-signs-youve-got-sleep-105800524.html

    Sleeping longer during the day will lead to a deeper sleep state (known as the REM cycle, aka rapid-eye movement), which is more difficult to wake up from. Nap in the early or mid-afternoon.

  7. PGO waves - Wikipedia

    en.wikipedia.org/wiki/PGO_waves

    PGO waves are an integral part of rapid eye movement (REM) sleep. As stated earlier, the density of the PGO waves coincides with the amount of eye movement measured in REM sleep. This has led some researchers to further theorize about the usefulness of PGO waves for dreaming.

  8. Neuroscience of sleep - Wikipedia

    en.wikipedia.org/wiki/Neuroscience_of_sleep

    REM sleep is considered closer to wakefulness and is characterized by rapid eye movement and muscle atonia. NREM is considered to be deep sleep (the deepest part of NREM is called slow wave sleep), and is characterized by lack of prominent eye movement, or muscle paralysis. Especially during non-REM sleep, the brain uses significantly less ...

  9. Psychological stress and sleep - Wikipedia

    en.wikipedia.org/wiki/Psychological_stress_and_Sleep

    Tired man. Sleep is a naturally recurring state of mind and body, characterized by altered consciousness, relatively inhibited sensory activity, reduced muscle activity, and inhibition of nearly all voluntary muscles during rapid eye movement (REM) sleep, [1] and reduced interactions with surroundings. [2]