How this cd works:

Brainwaves are the result of electrical activity in the brain as the neurons communicate with each other. The changes in this electrical activity depend on what the person is doing. Our brains cycle through different states throughout the day and night. These brainwave states incorporate Beta, Alpha, Theta, and Delta frequencies at different levels with one frequency dominating at any given time. The dominant frequency determines your “state of mind.” This concept is perfectly described by Anna Wise in her book, "Awakening the Mind" (Tarcher/Putnam, New York):

“Each state that you experience entails a symphony of brain waves, with each frequency playing its own characteristic part. This finely woven, intricate interrelationship of brain-wave frequencies delicately determines your state of consciousness. While you are rarely producing only one type of brain wave at a time, each category of brain waves has its own qualities and characteristics.”

Your brain responds to vibrations f