Pink noise boosts deep sleep in mild cognitive impairment patients

(Northwestern University) Gentle sound stimulation played during deep sleep enhanced deep sleep for people with mild cognitive impairment, who are at risk for Alzheimer's disease, a new study found. Those whose brains responded the most robustly to the sound stimulation showed an improved memory response the following day. These results suggest improving sleep is a promising novel approach to stave off dementia. The technology can be adapted for home use.