It has been long known that the brain will try to mimic frequencies. Light and sound frequencies can influence brain waves. Obviously our eyes are closed while we’re asleep so audio is the best modality for trying to influence brain waves during sleep.
The challenge with directly playing frequencies is that the sound is extremely annoying. Google: isochronic audio and test how you think it sounds. It works… But it’s a little bit jarring.
That’s why binaural audio has been so powerful. The theory is that you use two frequencies, one in each year, and the brain will automatically detect a third frequency (delta between the two). Now that’s pretty clever, huh! The challenge is that you need to isolate each ear. That’s hard to do during sleep.
The other issue with using audio frequencies during sleep is brain activity goes up and down through the sleep cycles. That’s why we must have a brain wave sensor to be able to correctly identify the sleep stage to apply correct braindriving frequency. It’s actually possible with an algorithm I wrote. More to follow…
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