A delta wave is a high amplitude brain wave with a frequency of oscillation between 0–4 hertz. Delta waves, like other brain waves, are recorded with an electroencephalogram (EEG) and are usually associated with the deep stage 3 of NREM sleep, also known as slow-wave sleep (SWS), and aid in characterizing the depth of sleep.
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💎 | Playlist♫ | Relaxing Deep Sleep:
💎 | Playlist♫ | Relaxing Music for Yoga and Meditation:
💎 | Playlist♫ | Relaxing Instrumental Music (Guitar, Piano, Flute):
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