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Brainwave Entrainment

What are Brainwaves?

Brainwaves are the actual rise and fall of the electrical impulses sent throughout the brain. The brain is made up of billions of neurons, each one constantly communicating with the others around it with electrical impulses. Because so many are firing at once the electrical activity actually forms waves or pulses of electrical activity which we call brainwaves. The different brainwave patterns can be recorded by electrical sensors placed on the head of an individual. The machine responsible for this type of recording is the EEG and through its use researchers have been able to map the different brainwave states and their relation to consciousness.

Picture of a neuron:

Below are some typical recordings of brainwave states by the EEG:

More modern EEG recordings:

The Significance of Brainwaves

Since the invention of the EEG and the resulting research into the relationship between brainwaves and conscious state much information has been gathered. For example we now know that certain brainwave patterns relate to different states such as intense concentration, dreaming sleep, deep dreamless sleep, relaxation, contemplation, lucid dreaming and even exotic states of consciousness such as hypnosis, trance, visionary experiences or spiritual experiences.

The EEG has also been used to map the states of people with ADD, depression, anxiety and many other mental or emotional issues which makes it possible for doctors to get a good look at someone's emotional state simply by watching their brainwaves.

Brainwave Entrainment

Brainwaves are effected by all of our senses and whatever a person is experiencing will effect their current brainwave state. With the use of any repetitious impulse to any one or more of our senses our brainwaves will naturally start to resonate with the given impulse. Flashing lights, watching a pendulum or hearing a constant rhythm will all stimulate the brainwaves of an individual to resonate with the rhythm of the sensory input. This is called Brainwave Entrainment.

Entrainment With Sound

With the use of certain sounds we can easily entrain a persons brainwaves to a certain frequency which corresponds to a certain mental state. As shown in the picture below a sound pulse will cause a cortical response in the brain of a listener at the same frequency as the sound wave.

When the brain is given a continual beat of the same frequency sound it will automatically become entrained to that beat and the individual will be lead into the state of consciousness that corresponds to the frequency. We can also cause entrainment by modifying sounds such as music by small amounts so that the changes in the music are almost inaudible but which still entrain the brainwaves of a listener.

Although all rhythmic sounds entrain brainwaves to an extent it is only when the rhythm gets close to the natural brainwave frequencies that the brain is effected to any great degree. If the sounds are consistent enough and are close to normal brainwave frequencies then the brain will respond by synchronizing its own electrical impulses to the same rhythm. When this occurs it can be said that the brain has been entrained to a certain beat.

Below is an EEG recording of a normal person at rest and also during brainwave entrainment to a 10Hz sound frequency. As you can see the brain still exhibits brainwaves from the low levels all the way up to 30Hz, the difference is that the 10Hz frequency has become pronounced or dominant and so the conscious state of the individual has also been effected.

As researchers have mapped many brainwave frequencies we can now use audio brainwave entrainment to easily induce any of the states that we desire such as, concentration, meditation, lucid dreaming, super learning, sleep and many others.

Brainwave Entrainment has over 70 years of solid research behind it. Click here to learn more

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