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2. Music and sleep - Wikipedia

   en.wikipedia.org/wiki/Music_and_sleep

   Although lyric gives depth and meaning to the music, it also stimulates cognitive processes, making it more difficult to fall asleep. Whereas instrumental music focuses on the melody and rhythm, it allows for relaxation without the distraction of lyrics. Research has given evidence for the use of instrumental music in improving sleep quality. [27]

3. 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 ]

4. Non-rapid eye movement sleep - Wikipedia

   en.wikipedia.org/wiki/Non-rapid_eye_movement_sleep

   Slow Wave Sleep (SWS) is a highly active state unlike a state of brain quiescence as previously thought. Brain imaging data has shown that during NREM sleep the regional brain activity is influenced by the waking experience just passed. A study was done involving an experimental and a control group to have them learn to navigate a 3D maze.

5. Sleep - Wikipedia

   en.wikipedia.org/wiki/Sleep

   Gamma waves are seen when a person is highly focused on a task or using all their concentration. Theta waves occur during the period of a person being awake, and they continue to transition into Stage 1 of sleep and in stage 2. Delta waves are seen in stages 3 and 4 of sleep when a person is in their deepest of sleep. [17]

6. Brain activity and meditation - Wikipedia

   en.wikipedia.org/wiki/Brain_activity_and_meditation

   This spontaneous activity is classified into four main classifications based on the frequency of the activity, ranging from low frequency delta waves (< 4 Hz) commonly found during sleep to beta waves (13–30 Hz) associated with an awake and alert brain. In between these two extremes are theta waves (4–8 Hz) and alpha waves (8–12 Hz). [4]

7. List of new-age music artists - Wikipedia

   en.wikipedia.org/wiki/List_of_new-age_music_artists

   This is a list of new-age music artists with articles on Wikipedia. New-age music is broadly defined as relaxing, even "meditative", music that is primarily instrumental. Unlike relaxing forms of classical music, new-age music makes greater use of electronica and non-Western instrumentation.

8. Sleep cycle - Wikipedia

   en.wikipedia.org/wiki/Sleep_cycle

   Sample hypnogram showing one sleep cycle (the first of the night) from NREM through REM. The sleep cycle is an oscillation between the slow-wave and REM (paradoxical) phases of sleep. It is sometimes called the ultradian sleep cycle, sleep–dream cycle, or REM-NREM cycle, to distinguish it from the circadian alternation between sleep and ...

9. Brainwave entrainment - Wikipedia

   en.wikipedia.org/wiki/Brainwave_entrainment

   Brainwave entrainment, also referred to as brainwave synchronization or neural entrainment, refers to the observation that brainwaves (large-scale electrical oscillations in the brain) will naturally synchronize to the rhythm of periodic external stimuli, such as flickering lights, [1] speech, [2] music, [3] or tactile stimuli.