Contributor: Dave Rosenberg, MD
- White noise is all the surrounding sound frequencies mixed together that your brain tunes down so you don’t get distracted while you’re sleeping
- Pink noise, or deep soothing noises, is the accentuated bass sounds like falling rain or waves crashing your brain keys into while sleeping.
- Brain electrical waves during stage 4 sleep (the deepest of sleeps), cause sudden increases and decreases in cerebral blood flow allowing for CSF washing of the brain, which helps eliminate beta amyloid – the misfolded protein linked to Alzheimers
- Pink noise during sleep has been shown to increase stage 4, creating more CSF washout of beta amyloid.
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2. Zee, P. Papalambros NA. et al. Acoustic Enhancement of Sleep Slow Oscillations and Concomitant Memory Improvement in Older Adults. Front Hum Neurosci. 2017 Mar 8;11:109. doi: 10.3389/fnhum.2017.00109. eCollection 2017.
Summarized by Jackson Roos, MS3 | Edited by Erik Verzemnieks, MD