Original research on auditory beats was discovered in 1839, by German physicist Heinrich Wilhelm Dove. The effectiveness of binaural beats is wide reaching and ideal for enhancing all cognitive processes. They also are commonly used to reduce preoperative anxiety, to relieve insomnia and to experience deep meditation. Binaural beats provide a highly effective method for entraining brain waves and rapidly altering the electrical activity in the brain boosting listeners into highly specific states of consciousness.īinaural beat therapy is commonly used in biofeedback to aid subjects in slowing down their brain wave activity. Research results show that parts of the brain, and eventually large areas of the brain, resonate sympathetically to this auditory illusion, like a crystal goblet vibrates in response to a pure musical tone. The beat is not coming through the headphones but is heard and "felt" within the brain. While listening to binaural beats the two hemispheres of the brain function together to “hear” not the external sound signals but instead a third “phantom” beat, which is the mathematical difference between the two tones. (Hz is the abbreviation for hertz - not the rental car company but the standard unit for measuring cycles per second.) For example, a sine wave of 100 Hz played in the left ear plus another slightly different frequency of 107 Hz in the right ear will produce an auditory illusion of a specific frequency beat oscillating at 7 cycles per second, exactly the difference of the two tones.
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