Podcast 554: Sleeping Away Alzheimer's

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.