The sensation of auditory binaural beats occurs when two coherent sounds of nearly similar frequencies are presented one to each ear with stereo headphones or speakers. The brain integrates the two signals, producing a sensation of a third sound called the binaural beat.
Binaural beats originate in the brainstem's superior olivary nucleus.
The binaural beat is neurologically conveyed to the reticular formation which uses neurotransmitters to initiate changes in brain wave activity. Click here to learn about the Hemi-Sync process.