Human study · Supplements / medicine · 9 Sept 2026
A burst of pink noise may lead to more restorative sleep
Source: EurekAlert
What the research found
Study. MIT’s Laura Lewis and Joshua Levitt report in Science Translational Medicine that 50-millisecond pink-noise bursts timed to slow-wave peaks during sleep increased slow-wave and cerebrospinal-fluid flow amplitude in 14 healthy volunteers, using EEG plus fMRI. Slow waves also tracked blood-vessel pumping of CSF. The work does not show that a consumer sound machine clears amyloid or treats Alzheimer’s. Educational sleep-physiology notes, not a device recommendation and not medical advice.
Evidence level: Human study. A study in people, but an association isn't proof of cause.
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