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  2. Music and sleep - Wikipedia

    en.wikipedia.org/wiki/Music_and_sleep

    Polysomnography investigations have found listening to slow-tempo music increased slow-wave sleep (deep sleep) and reduced rapid eye movement sleep (lighter sleep stage). [12] Music facilitates a large improvement in sleep quality for insomnia patients. [13]

  3. SleepResearch_Facility - Wikipedia

    en.wikipedia.org/wiki/SleepResearch_Facility

    His music usually contains no rhythmic elements (one exception is "2.5" on Dead Weather Machine), but instead relies on spacious, extended, richly-textured sounds. Occasionally, true 'musical' elements appear in his work, such as sustained chords (in "c-deck" on Nostromo for example), but the majority of his compositions consist of evolving ...

  4. Slow-wave sleep - Wikipedia

    en.wikipedia.org/wiki/Slow-wave_sleep

    Slow-wave sleep (SWS), often referred to as deep sleep, is the third stage of non-rapid eye movement sleep (NREM), where electroencephalography activity is characterised by slow delta waves. [ 2 ] Slow-wave sleep usually lasts between 70 and 90 minutes, taking place during the first hours of the night. [ 3 ]

  5. Rapid eye movement sleep - Wikipedia

    en.wikipedia.org/wiki/Rapid_eye_movement_sleep

    In the ultradian sleep cycle, an organism alternates between deep sleep (slow, large, synchronized brain waves) and paradoxical sleep (faster, desynchronized waves). Sleep happens in the context of the larger circadian rhythm , which influences sleepiness and physiological factors based on timekeepers within the body.

  6. Bear ‘Tucking Themself In’ for Hibernation in Yellowstone ...

    www.aol.com/lifestyle/bear-tucking-themself...

    A deep sleep similar to hibernation." Most of us grew up being told that bears hibernate during the winter, but as CJAGIII said, they actually don't. Torpor is often referred to as temporary ...

  7. Sleep - Wikipedia

    en.wikipedia.org/wiki/Sleep

    The whole period normally proceeds in the order: N1 → N2 → N3 → N2 → REM. REM sleep occurs as a person returns to stage 2 or 1 from a deep sleep. [18] There is a greater amount of deep sleep (stage N3) earlier in the night, while the proportion of REM sleep increases in the two cycles just before natural awakening. [15]