The difference between the two - 10Hz - entrains the brain to that frequency, bang in the middle of the Alpha wave range, supposedly inducing relaxation. One ear gets a 315Hz sine wave, for example, and the other gets a 325Hz wave. However, average human hearing is limited to a range between 20 and 20,000Hz, so binaural beats are used to gain the same effect. For example, we know that Alpha waves - between 7 and 13 Hz - are associated with relaxation and drowsiness. This is a phenomenon discovered in 1839 and investigated further in the 1970s, which claims that playing audio at certain frequencies can move the activity of your brain waves towards those frequencies. Optimizing Radiation Doses for Computed Tomography Across Institutions: Dose Auditing and Best Practices. The sounds they're listening to are infused with "binaural beats". So here's the reality of the situation: your children are not getting high from listening to audio. After an initial brief "lol", I've been trying hard to ignore it, but it seems to be gaining more and more attention from supposedly serious newspapers. For the past couple of weeks, a story has been working its way through various media organisations about kids in a high school in Oklahoma listening to MP3 files and getting high.
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