The Theory Behind Binaural Beats
Binaural Beat Frequencies to Increase Brain Power
One of the easiest way of stimulating the brain is via the ears. Other senses (like vision) can be used as well and is often used. However in order to really bring the brain into an altered state, humans must use special techniques, one of the most simple and profound methods being binaural beats.
How do these beats work on the human mind? In theory its actually relatively simple. If the left ear is presented with a steady tone of say 440Hz and the right ear 450Hz, the two tones will combine in the brain create a wavelength of 10Hz. This is special because the ear cannot pickup sounds this low, but when the two tones meet in the brain, the effect is felt: The10Hz is formed complete by your brain. The left and right sounds do not sync until in your brain. So a binaural beat is the frequency difference when perceived by the brain. Keep in mind you must be using stereo headphones to achieve this two tone effect. Normal speakers will cause the tones to mix and bleed into each other creating no effect on the mind.
How to Measure Brain State
The vibrations in the brain are measured by EEG (Electroencephalography) technology. This technology picks up the electrical vibrations from the surface of the human head. If youve ever seen a pictures with someone wherein what looks like swim cap with endless wires that are plugged into a machine, youve seen EEG technology. When a person is listening binaural beats the resulting EEG pattern will normally contain frequencies below 30Hz (which is the waking generally conscious state). The main frequencies are categorized into four key states. Newer brain power products have divided the four states into specific waves to help generate particular behaviours or changes in a persons life. However they all still derive from State Beta, Alpha, Theta and Delta waves.