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A Burst of 'Pink Noise' May Lead to More Restorative Sleep

Researchers found 50-millisecond pink-noise bursts boosted slow waves and cerebrospinal fluid flow in 14 healthy volunteers during sleep.

Summary by Medical Xpress
During the day, waste products such as lactic acid and worn-out proteins build up in the brain. When we sleep at night, waves of cerebrospinal fluid (CSF) help wash away this waste, keeping the brain healthy.

5 Articles

The human brain expels waste while we sleep. Apparently, certain sounds can improve this process. We gave a few months ago in ZAP the news that pink noise reduces REM sleep and can damage the quality of sleep. But not everything is bad news. According to a new study published on Wednesday in Science Translational Medicine, sleeping to hear bursts of pink noise, background sounds similar to the soft static of a radio, seems to increase the flow o…

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Medical Xpress broke the news in Douglas, United Kingdom on Wednesday, September 9, 2026.
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