First discovered by biophysicist Gerald Oster at Mount Sinai Hospital in New York City, brain wave audio technology sends pure, precisely tuned sound waves of different frequencies to your brain via stereo headphones. In his EEG research, Oster discovered that when different vibrations, or sound frequencies, are delivered to the brain separately through each ear (as with stereo headphones), the two hemispheres of the brain function together to "hear" not the external sound signals, but a third phantom signal. This signal is called a binaural beat, and it pulses at the exact mathematical difference between the two actual tones.
So, for example, if a signal of 100 cycles per second entered your left ear and a signal of 109 cycles per second simultaneously entered your right ear, what you would actually perceive you heard would be a rhythmic, soothing pulsation, beating at 9 cycles per second. Research results show that first parts of the brain and, eventually, large areas of the brain begin to resonate sympathetically with this "phantom" binaural beat in what is known as the Frequency Following Response.
Subsequent research determined that binaural beat frequencies could drive or guide brain activity into a wide variety of specific brain states. Thus, effortlessly and naturally, your brain activity slides into rhythm with this binaural beat, becoming organized and coherent. Within minutes, the sound frequencies start to balance the left and right hemispheres of your brain – creating a remarkable state called hemispheric synchronization and driving the electrical activity of your brain into powerful states, normally unattainable.
Scientists have noted that this rare phenomenon was accompanied by flashes of creative insight, euphoria, intensely focused concentration, deep calm, and enhanced learning abilities. Brain Sync has advanced and refined a sophisticated sound recording technique called Harmonic Superimposition of binaural beat frequencies. In our audio programs, carefully tuned binaural beats are superimposed, layer upon layer, causing different groups of neurons to fire at different frequencies.
Recent scientific research indicates that individual brain states, ranging from sleep to creativity, are marked by combinations of different brain wave frequencies. Brain Sync's Harmonic Superimposition technique takes a number of highly specific binaural beat frequencies and combines them simultaneously so that the binaural beats themselves create harmonic beat frequencies with the other binaural beats, to produce a highly specific brain state. The frequencies we've chosen for our audio programs are very powerful "window frequencies" ranging from the low delta range, associated with sleep and healing, upward through theta, then alpha, and into the very high beta range associated with heightened alertness and cognition.http://www.brainsync.com/pilot.asp?pg=brainwave-therapy
