Study: A burst of "pink noise" may lead to more restorative sleep
20 days ago
- Waste products like lactic acid build up in the brain during the day, and cerebrospinal fluid (CSF) waves during sleep help clear them.
- MIT researchers enhanced CSF waves by delivering short bursts of pink noise during sleep, synchronized with slow electrical brain waves.
- The pink noise bursts increased the amplitude of slow waves and CSF waves, potentially improving brain waste clearance.
- Enhanced CSF flow may boost cognitive function, improve memory, and help slow neurodegenerative diseases like Alzheimer's.
- The study used a novel method to filter EEG noise from fMRI signals, allowing precise timing of the auditory stimulus.
- Researchers aim to explore applications for restorative sleep in insomnia and waste clearance in dementia, with a startup developing a home-use device.