Science and Technology


The Human Brain

Our brains are made up of around 100 billion nerve cells, called neurons. 

These neurons are separated by gaps, called synapses, and they receive and transmit information electrochemically.  When many neurons are firing at the same speed in a particular area, they generate a frequency that can be read by an electroencephalograph (EEG) machine.  Throughout our day to day activities, our brains move through a wide variety of frequencies.

Brainwave Frequencies
There are five primary brain wave frequency groupings that have been correlated with specific observable states.

These are:


(in hertz, which is waves per second)


Sample Image

Associated Experience

0-4 Hz

Delta delta

Deep sleep, cell regeneration, cortisol reduction, unconscious information. If present during an awake state, person will appear disconnected.

4-8 Hz

Theta Theta

Intuitive, internal, almost trance-like, creative, visual/emotional thought, inner awareness

8-12 Hz

Alpha Alhpa

Creative problem solving, light relaxation, super learning, positive thinking, resourcefulness, pleasant emotions, at ease/calm, alert but relaxed

16-20 Hz

Beta Beta

Highly alert, logical analysis, increased focus and mental ability, athletic states.

30/40-60 Hz

Gamma Gamma

Tends to appear in bursts, less information available, appears to be associated with bursts of insight, decision making under stress

Binaural Beats

Binaural beats work by sending signals of different frequencies to the right and left ear so the brain tunes into the middle frequency, bringing the listener to the desired state within just a few moments of listening.

According to Dr. Jeffrey Thompson, D.C, B.F.A of the Center for Neuroacoustic Research, “If a pure tone of 400 Hz is presented to the right ear and a pure tone of 410 Hz is presented simultaneously to the left ear, an amplitude modulated standing wave of 10 Hz, the difference between the two tones, is experienced as the two wave forms mesh in and out of phase within the superior olivary nuclei. This binaural beat is not heard in the ordinary sense of the word (the human range of hearing is from 20-20,000 Hz). It is perceived as an auditory beat and theoretically can be used to entrain specific neural rhythms through the frequency-following response (FFR)--the tendency for cortical potentials to entrain to or resonate at the frequency of an external stimulus.”

Using binaural beats and other brainwave entrainment sounds, we can be selective in the frequencies we access and, as a result, the activity level and brain response we attain. Audio with embedded binaural beats are known to result in increased relaxation, super learning, improved sleep quality, decreased sleep requirements, enhanced creativity and intuition, stress reduction, etc.

The image below shows the change in brain frequency after 6 minutes of listening to binaural beats through stereo headphones:


To see actual before and after qEEG results (based on research conducted at Q-Metrix, an EEG reporting/research center in Burbank, CA) of a brain changes after listening to our Pass the Bar recordings, click here.