A finely tuned recording of a waterfall might be one key to better sleep and memory, according to a new Northwestern Medicine study.
The study used gentle sounds like a waterfall synchronized to the rhythm of brain waves to test its affect on deep sleep and memory.
Focusing on older adults, the study sought to find a connection between deep sleep, which decreases with age, and memory.
The study used a technique that monitored brain wave movement and played sounds as brain waves rose. It found that the sounds encouraged more deep sleep slow brain waves.
The sound stimulation enhanced both sleep and memory, the study found. The research might lead to home devices that could use sound to enhance deep sleep and memory.
