Product DescriptionIn our deepest state of dreamless sleep, when we heal and replenish our resources, our brains produce a slow pattern of electrical activity called "delta" waves. Over 30 years of clinical exploration into the use of music and sound for altering states of consciousness, Dr. Jeffrey Thompson has developed unique processes for embedding a subtle form of delta waves into musical and natural sound recordings. After a few minutes of listening, your own brainwaves naturally "lock" onto the brainwave patterns blended into the soundtracks and you drift easily and naturally into sleep.