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this area. It can be utilized with relative ease, does not require years of intensive training, and is not limited to a narrow band of application. Hemi-Sync (short for hemispheric synchronization) uses patterns of sound to help create simultaneously an identical wave form in both brain hemispheres. This means that when your ear hears a certain type of sound signal, the brain tends to respond or “resonate” with similar electrical signals. Knowing that various electrical brain waves are indicators of states of consciousness (such as awake or asleep), you thus can listen to a similar sound pattern and it will help you be in the desired state of awareness. Hemi-Sync takes the process an important step further. Each ear sends its dominant nerve signal to the opposite brain hemisphere, following the X pattern. When separate sound pulses are sent to each ear (using headphones to isolate one ear from the other), the halves of the brain must act in unison to “hear” a third signal, which is the difference between the two signals in each ear. For example, if you hear a sound measuring 100 in one ear and another signal of 125 in the other, the signal your whole brain will “generate” will be 25. It is never an actual sound, but it is an electrical signal that only can be created by both brain hemispheres acting and working together. The signal so generated is narrow-band in frequency and often twice the amplitude or strength of a typical EEG brain-wave form. If the 25 signal (above) is one that produces a certain type of consciousness, then the whole brain—both hemispheres—is focused in an identical state of awareness at the same time. Most important, the condition can be changed at will by changing the sound pattern. It also can be learned and re-created from memory when the need arrives. Once the researcher or clinician is exposed to some of the potentials of the Hemi-Sync process, his first thought is application within areas of his own interest. One illustration of this is in the field of psychiatry. The use of Hemi-Sync in analysis apparently opens the patient to levels of memory that may take years to achieve using standard interview methods. Another experimental use has been in