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  2. The 9 Best Free Sleep Meditation Apps - AOL

    www.aol.com/lifestyle/9-best-free-sleep...

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  3. Music and sleep - Wikipedia

    en.wikipedia.org/wiki/Music_and_sleep

    Persistent sleeping disturbances can lead to fatigue, irritability, and various health issues. Numerous studies have examined the positive impact of music on sleep quality. As early as 2000 B.C., lullabies were designed to aid infant sleep. For adults with sleep-related disorders, music serves as a useful intervention in reducing stress.

  4. Hearing range - Wikipedia

    en.wikipedia.org/wiki/Hearing_range

    The hearing range of birds is most sensitive between 1 kHz and 4 kHz, but their full range is roughly similar to human hearing, with higher or lower limits depending on the bird species. No kind of bird has been observed to react to ultrasonic sounds, but certain kinds of birds can hear infrasonic sounds. [29] "Birds are especially sensitive to ...

  5. Brain activity and meditation - Wikipedia

    en.wikipedia.org/wiki/Brain_activity_and_meditation

    The effects of meditation on the brain can be broken up into two categories: state changes and trait changes, respectively alterations in brain activities during the act of meditating and changes that are the outcome of long-term practice. Mindfulness meditation, a Buddhist meditation approach found in Zen and Vipassana, is frequently studied.

  6. The Best Sleep Meditation Practice for You, According ... - AOL

    www.aol.com/lifestyle/best-sleep-meditation...

    The Best Sleep Meditation Practice for You, According to Your Zodiac Sign. ... ”As water signs, Cancers will love to fall asleep to the sounds of rain, waterfalls, or ocean waves and be immersed ...

  7. Audio frequency - Wikipedia

    en.wikipedia.org/wiki/Audio_frequency

    The SI unit of frequency is the hertz (Hz). It is the property of sound that most determines pitch. [1] The generally accepted standard hearing range for humans is 20 to 20,000 Hz. [2] [3] [4] In air at atmospheric pressure, these represent sound waves with wavelengths of 17 metres (56 ft) to 1.7

  8. Effects of meditation - Wikipedia

    en.wikipedia.org/wiki/Effects_of_meditation

    Electroencephalography has been used for meditation research.. The psychological and physiological effects of meditation have been studied. In recent years, studies of meditation have increasingly involved the use of modern instruments, such as functional magnetic resonance imaging and electroencephalography, which are able to observe brain physiology and neural activity in living subjects ...

  9. Pamela Anderson has makeup-free glow alongside son ... - AOL

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    Pamela Anderson’s 28-year-old son, Brandon Thomas Lee, is the perfect plus-one. On Jan 5., Anderson attended the 2025 Golden Globe Awards with her son by her side. The 57-year-old “Baywatch ...

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