A recent study showed that adults could listen to pink noise synced to 1Hz brain waves deepens sleep and boosts memory. These same low-frequency Delta patterns appear in all of my sleep music and the recording Deltasurf Surf Series employs the technique outlined in this research.
Gentle sound stimulation—such as the rush of a waterfall—synchronized to the rhythm of brain waves significantly enhanced deep sleep in older adults and improved their ability to recall words, reports a new Northwestern Medicine study.
Deep sleep is critical for memory consolidation. But beginning in middle age, deep sleep decreases substantially, which scientists believe contributes to memory loss in aging.
After the sound stimulation, the older participants’ slow waves increased during sleep.
Pink noise synced to brain waves deepens sleep and boosts memory in older adults. Frontiers in Human Neuroscience 1.940 (2011)
Nelly A. Papalambros et al. Acoustic Enhancement of Sleep Slow Oscillations and Concomitant Memory Improvement in Older Adults, Frontiers in Human Neuroscience (2017). DOI: 10.3389/fnhum.2017.00109. https://www.frontiersin.org/articles/10.3389/fnhum.2017.00109/full