Brain Wave Patterns

For anyone who has been on my Cosmic Traveller Courses you will remember that we explore different states of consciousness - below are WebPage extracts, courtesy of Brainwave Generator - a modern day equivalent of the follow response ‘technology’ used by the Shaman in his Soul Retrieval work

EEG (Electroencephalography) technology is used to measure brain's electrical vibrations from the surface of the scalp.

The resulting EEG pattern will contain frequency elements mainly below 30Hz. The frequencies are categorised into four states as follows:

State, Frequency range & State of mind

Delta :  0.5Hz - 4Hz  :  Deep sleep
Theta :  4Hz - 8Hz  :  Drowsiness (also first stage of sleep)
Alpha :  8Hz - 14Hz  :  Relaxed but alert
Beta :  14Hz - 30Hz  :  Highly alert and focused

The dominant frequency in the EEG pattern determines what shall be called the current state of the brain.

If the amplitude of the alpha range frequencies is highest, then the brain is said to be in the alpha stage. Note, that other frequencies still exist and it is impossible to give any "exact frequency your brain is operating on". However, later references to the brain states use the simplification of assuming that such a single frequency exists.

Entraining the brain to a desired state
If external stimulus is applied to the brain, it becomes possible to entrain the brain frequency from one stage to another.

For example, if a person is in beta stage (highly alert) and a stimulus of 10Hz is applied to his/her brain for some time, the brain frequency is likely to change towards the applied stimulus.

The effect will be relaxing to the person.

This phenomenon is also called frequency following response.

Stimulating the brain with binaural beat frequencies.
The easiest way of applying stimulus to the brain is via ears.

Other senses could be used as well, and vision is actually used quite often (often in addition to hearing).

However, humans cannot hear sounds low enough to be useful for brain stimulation, so special techniques must be used.

One such special technique used is called binaural beats.

If the left ear is presented with a steady tone of 500Hz and the right ear a steady tone of 510Hz, these two tones combine in the brain. The difference, 10Hz, is perceived by the brain and is a very effective stimulus for brainwave entrainment.

This 10Hz is formed entirely by the brain. When using stereo headphones, the left and right sounds do not mix together until in your brain.

The frequency difference, when perceived by brain this way, is called a binaural beat.

The effect of the audible frequencies used.
To get a stimulus of 10Hz, you may use tones of 500Hz and 510Hz, or 400Hz and 410Hz, or 800Hz and 810Hz, or so on.

The only requirements are that the tone is heard well enough and that it is below about 1000Hz.

Below 1000Hz, the wavelength of the skull is sufficiently small so that the sound waves curve around it.

Altered brain states.
As mentioned above, applying a stimulus to the brain will eventually bring the brain's state closer to the stimulus frequency.

The following paragraphs describe some possible effects of this. Note, however, that just passively listening to binaural beats does not necessarily alter your state of consciousness. For example, willingness and ability to relax and focus attention affects how effective the binaural beat stimulus is for inducing state changes.

Helping in meditation.
Meditation is essentially about willingly being able to alter one's brain frequency to a desired state.

While meditators have traditionally used several years to learn the techniques of meditation, you can now attain the same effect with brainwave entrainment.

No special training or great discipline is required. Good meditation frequencies are in the alpha range, from 8Hz to 13Hz.

When a certain brainwave state is experienced and practiced over a period of time, the brain will "learn" the state change and it will become easier to self-produce the desired brainwave state at will. Thus, using brainwave entrainment, you can expect to get some of its effects later even without any entrainment.

Reducing learning time.
The theta stage (4hz - 7Hz) has been found to increase learning capabilities.

In fact, children spend more time in theta stage than adults, which probably explains the accelerated learning capabilities of children.

Alpha frequencies are also useful for learning purposes.

You can play language cassettes, subliminal tapes, etc. during an entrainment session for a maximum effect.

Reducing sleep needs.
Some people have found that half an hour a day of the Theta stage can replace up to 4 hours of sleep.

Treatment of certain mental diseases.
Brainwave entrainment is used in treatment of depression, low self-esteem, attention deficit disorder, drug and alcohol addiction and autism, to name a few.

For more Information and to download Brainwave Generator - click on the logo   

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