Binaural Beats

This topic about binaural rhythms caused quite a big resonance - many wanted to try these rhythms on themselves or on others. So I decided to describe here the principles of their work and lay out instructions for self-production.

But before starting, I would like to clarify one point. I DO NOT urge anyone to use these rhythms. I DO NOT guarantee that it is absolutely safe for your health and does not have any side effects. First of all, I want to clarify the basis of the principle of operation of this technology. If you want to try it on yourself, make sure that you have no contraindications (epilepsy, etc.) and be reasonable - do not abuse.

So, how exactly can these rhythms affect the state of consciousness? And they affect the rhythms of the brain, which are visible on the EEG. It turns out that under certain states of consciousness certain rhythms dominate. In order not to drive you from page to page, I’ll give here a brief description of some rhythms of the brain, taken from Wikipedia.

Delta rhythm

Frequency : 1 to 4 Hz.
State of consciousness : deep natural sleep.
Notes : fluctuations in this range can be recorded in the EEG of rest under certain forms of stress and prolonged mental work.
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Theta rhythm

Frequency : 4 to 8 Hz.
State of consciousness : the dominant rhythm of the electroencephalogram in healthy children aged 2-8 years. According to other sources - the state of meditation, creative activity.

Alpha rhythm

Frequency : 8 to 13 Hz.
State of consciousness : calm wakefulness, relaxation, improved receptivity, a sense of serenity and the emergence of a special so-called. "Extended state of consciousness."

Beta rhythm

Frequency : from 14 to 30 Hz.
State of consciousness : active wakefulness, increased attention, mental stress, emotional arousal.

Gamma rhythm

Frequency : from 30 to 120-170 Hz. According to other sources - up to 500 Hz.
State of consciousness : this rhythm is observed when solving problems that require maximum focused attention.

The theory of binaural rhythms is based on the fact that if in any way you act on the brain with a signal with a certain frequency, then this signal will resonate with the corresponding rhythm of Mogza, which will enhance the corresponding state of consciousness.

If this signal is a normal sound of a certain frequency, then the person will simply not be able to hear it for physiological reasons. Therefore, use two channels of sound from the range of audible frequencies. Moreover, the frequency difference on these channels should be equal to the rhythm of the brain we need. As a result, when a person listens to such a recording, a superposition of these frequencies will occur in his brain, which will be subjectively felt as a pulsation of sound (amplification and attenuation of amplitude). The frequency of this ripple will be equal to the difference of frequencies on the left and right channels.

Well, actually, how to record such a rhythm yourself. To do this, you need an audio editor with the ability to separately edit the right and left channels and a simple frequency generator, which produces a sinusoid. We choose the main frequency - the sound that we will hear. Somewhere from 150 to 2000. Try it yourself - as you like. For example, 250 - this will be the right channel. Next, you need to decide on the state of consciousness that you want to increase (achieve) and watch the corresponding frequencies. For example, relaxation - 8-13 Hz. Choose 10 - then on the left channel should be 240 Hz (260 Hz).

If this is reproduced in headphones (only in headphones these rhythms can work), then we will hear an even low pulsating hum. Pretty unpleasant with unaccustomed. So I advise you to put up a track with white noise (the same on the left and right channels), which is easy to get by forcing the microphone to record silence.

As you can see, all numbers are in the form of ranges, so try different values. You can also try to impose pure rhythms on the music. Then I would advise you to choose a smooth, non-intrusive rhythm (like a dance one), and so that it corresponds to the expected state of consciousness.

PS In the comments, many say that it is unscientific and that can not be. To somehow visually demonstrate where the low frequencies come from, I present a graph of the function sin (x / 50) + sin (x / 55). We see frequent fluctuations on it - this is the main signal, level fluctuations - this is the very rhythm with an ultra-low frequency.
I specifically reduced the ratio of the frequency of one channel to the difference of frequencies on the channels so that the lines do not merge with each other.