A Short Introduction To Binaural Beats
So you may have encountered information about binaural beats and the benefits they can offer individuals, such as weight loss assistance, better learning, creativity, and stress relief. But where exactly did binaural beats come from, what are they, and are they useful?
Binaural beats are made when two different auditory impulses, also regarded as “tones,” are delivered to the left and the right ear at the same time. Each of these tones are slightly different in frequency, with the difference measured in Hertz (Hz), or cycles per second. Heinrich Wilhelm Dove was the first person to discover this phenomenon back in 1839.
For example, let’s make the assumption that you have one tone being delivered to each ear. The one tone could be 180 Hz and played into your right ear, and the second tone could be 185 Hz and played in the left ear. The difference in frequencies makes a “beat” referred to as the binaural beat. In the example, the difference would be 5 Hz.
Because of the frequency of each of the tones and their subtle differences (remember, hertz is the number of cycles per second), your ears do not actually perceive the difference in sound. What does perceive the difference is the superior olivary nucleus of each brain hemisphere, which then talks to the brain stem. These responses are being delivered from the brain stem, which then cause each half of the brain to synchronize with the opposite side.
The binaural beats are not just used for individuals and are used on a bigger scale. One organization, The Monroe Institute, heavily markets this type of treatment, which has been utilized in hospitals and similar fields. Several benefits have been found from utilizing the binaural beats, which includes less need for pain medicine, quicker recuperation, stabilized blood pressure, and more.
In the year 1999, Anesthesia decided to do a study. In order to prove or disprove this concept, a study was done that involved three different tapes that were created for the subjects to listen to. Each subject was undergoing a different procedure, and were all administered a drug called fentanyl. Fentanyl is most often used for chronic pain, or chronic breakthrough pain. The three tapes had a recording of either classical music, a product named “Hemisync,” or a blank tape. It was determined that those listening to the Hemisync tape needed much less fentanyl when compared to the other tapes.
Luckily, a study that was done has been released that explains to the public that binaural beats can truly be a big benefit to those who choose to use them. For additional reading, please refer to the study “Hemispheric Synchronized Sounds and Intraoperative Anesthetic Requirements.
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