Brainwaves measured with an EEGDream Sculpting or electroencephalogram have shown frequencies ranging from the very excited gamma state (< 40 Hz) to the deep dreamless sleep state of delta state (> 4 Hz), with the beta, alpha and theta states in between. Deep sleep is the state of the body when the brain generates electric energy cycles of it's lowest frequency, less than 4 Hz. The brain has a tendency to fall in step with the frequencies in its immediate surroundings and this is the basis of brainwave entrainment, a new technology that allows brain entrainment to very specific frequencies using repeated stimulus like light or sound waves. With this sort of targeted ability brain entrainment is able to cure health problems that are the result of a lack or over abundance of certain brainwave frequencies.

Brainwave entrainment uses binaural beats, monoaural beats and isochronic tones to re-sync the brain to the desired frequency and state of consciousness. Binaural beats require headphones to listen to the beats. Though it helps in falling asleep, one cannot sleep with the headphones on, so it may be difficult staying asleep. Binaural beats are therefore not best suited to sleep therapy. Isochoronic tones do not require headphones, are more powerful and effective than binaural beats. Isochoronic tones use tones of short intensity and a rapid, rhythmic pulse that turns itself on and off with periods of complete silence in between. They effect the whole brain at once and are able to harmonize with the brain more quickly and efficiently.

When we close our eyes and are relaxed, the brain moves into the alpha state. From this state, it then passes into the theta state of dreaming sleep from which one can be awakened easily. Theta states are also used for self-hypnosis. Deep sleep is characteristic of the delta state where the brainwave frequencies are very low. Isochronic tones can be used to transport a person from the alpha to the theta and then the delta state by subtly changing the tones and the rhythm. This method follows the natural sleeping patterns and thus is in harmony with the body. Effectively, taking you into a deep, dreamless state within minutes instead of hours.

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