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2. Doctors Say This Type Of Noise Is Best For Deep Sleep - AOL

   www.aol.com/doctors-type-noise-best-deep...

   Pink noise has a lower frequency than white noise, making it gentler than other types—a happy medium between white noise and total silence. ... Finding the right sleep sound is a bit like ...

3. Colors of noise - Wikipedia

   en.wikipedia.org/wiki/Colors_of_noise

   Violet noise is also called purple noise. Violet noise's power density increases 6.02 dB per octave with increasing frequency [8] [9] "The spectral analysis shows that GPS acceleration errors seem to be violet noise processes. They are dominated by high-frequency noise." (density proportional to f 2) over a finite frequency range.

4. Gamma wave - Wikipedia

   en.wikipedia.org/wiki/Gamma_wave

   A gamma wave or gamma rhythm is a pattern of neural oscillation in humans with a frequency between 30 and 100 Hz, the 40 Hz point being of particular interest. [1] Gamma rhythms are correlated with large-scale brain network activity and cognitive phenomena such as working memory , attention , and perceptual grouping , and can be increased in ...

5. Sharp waves and ripples - Wikipedia

   en.wikipedia.org/wiki/Sharp_waves_and_ripples

   Sparse firing of CA1 pyramidal cells and in-phase inhibition from the activated interneurons, give rise to high frequency (200 Hz) network oscillations, which are the ripples. [9] CA1 population bursts lead to highly synchronized activity in the target population of parahippocampal structures.

6. Music and sleep - Wikipedia

   en.wikipedia.org/wiki/Music_and_sleep

   Music improved sleep quality with increased exposure regardless of differences in the demographic, music genre, duration of treatment, and exposure frequency. Dickson suggests "listening to music that you find relaxing, at the same time, every night for at least three weeks".

7. Psychoacoustics - Wikipedia

   en.wikipedia.org/wiki/Psychoacoustics

   Psychoacoustics is the branch of psychophysics involving the scientific study of the perception of sound by the human auditory system.It is the branch of science studying the psychological responses associated with sound including noise, speech, and music.