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MIT, BU study finds bursts of pink noise may help sleep
The Boston Globe • • health
Key Points:
- Researchers at MIT and Boston University discovered that precisely timed bursts of pink noise during non-REM sleep can enhance cerebrospinal fluid (CSF) waves that help clear brain waste, potentially improving brain health.
- The study used EEG and MRI technology to deliver 50-millisecond pink noise bursts at specific moments in the brain’s slow-wave cycle, showing that timing is crucial for influencing CSF flow.
- The research is preliminary and conducted on healthy individuals; the scientists aim to test whether this method could benefit older adults or those with neurological disorders like Alzheimer’s and Parkinson’s.
- The researchers have developed a patented “CSF-flow neurofeedback system” and plan to create a consumer device for home use, but currently caution against trying to replicate the experiment with continuous pink noise at home.
- Experts emphasize that for better sleep, a quiet, dark, and cool environment remains best, and consistent sleep routines are more important than specific sounds or noises.
