Brainwaves and Brainwave Entrainment
You all must have heard about ‘brain waves
and brainwave entrainment', most people perceive it as
some form of electrical activity of the brain. Scientists
opine that it is very essential to know the functions of
your brain and understand its capability to manage your
day-to-day activities. On understanding how your brain
goes in and out of definite brainwave states, you can very
easily decide when to be productive, when to let your
creative juices flow or when your body should rest.
Brain waves – How it communicates
Our brain consists of about 100 billion neurons (more than
the number of starts in the Milky Way); and each neuron is
again connected to about 10,000 other neurons. All these makes
for about 100 to 500 trillion neuron-to-neuron connections in
the brain. And do you know, how the brain cells communicate?
They communicate via electrical signals. Scientific studies are
on to develop a technology that can observe what’s happening at
the neuron level; as of now, technology that can only see
patterns of brain activity is available.
You can realize certain pulse or beats in your brain (just
as heart beat), if you take the overall brain activity into
consideration. However, these brain pulse rate are quicker than
heart beats – starting from 3 times per second to 100 times per
second. This can be compared to flicker like movement and is
known as ‘brain waves’.
However, the frequency or speed of the brainwaves varies as
per the various activities the brain is indulged in. In short,
different brainwave frequencies have been shown to correspond
to different condition of mind and also the match up to a gamut
of subjective experience. Just as, when in deep sleep the brain
pulse rate is 3 times per second; while when engaged in serious
thinking, the pulse rate might got up to even 50 times a
second. Therefore, it is very relaxing when the brainwaves are
slow and fast brainwaves may show signs of stress and induced
Brainwave frequency that exists along a wide
range can be classified into five groups based on their
speed from slow to fast - delta, theta, alpha, beta, and
While Delta brainwaves have a pulse rate
frequency of 4 pulses or less per second; it indicates that the
brain is breathing slowly and heavily. It is during the deep
sleep stage that the brain experience delta brainwaves.
On the other hand, Theta brainwaves which
demonstrate a pulse rate frequency of 4 to 7 times per second
is related to dreaming and REM-stage sleep – and may occur
several times during the day. Theta brainwaves are hugely
responsible for creating a state of creative flow in the brain,
where ideas seem to come effortlessly. The feeling of moving
into a trance just like in meditation, hypnosis and sometimes
even experiencing a kind of ‘auto-mode’ while doing any
activity is due to the brain moving into the Theta state.
Then, there are the Alpha brainwaves with
frequency at the rate of 7 to 13 pulses per second. This state
corresponds to a condition of profound relaxation while awake,
mostly when you lie down with your eyes closed.
The frequency of brainwaves in a normal state of mind is 13
to 40 pulses per second’ and that state is called
Beta. It is necessary to perform certain
mental activities to boost energy levels and ensure that there
is sufficient beta activity in the brain; absence of which can
lead to insomnia and depression.
Another very rare state of heightened brain activity is
Gamma brainwaves, with frequency of over 40
pulses per second. This happens during very high level of
concentration or during fear. Stress-free gamma brainwave is
uncalled for and can hardly be experienced.
Other than the beta brainwaves state (which is the normal
frequency state), all the other states of mind is called
altered state of consciousness. You can change your brainwave
frequency from ‘normal’ beta into ‘low frequency’ alpha and
theta with the help of meditation. This process of altered
state of consciousness is beneficial in treating insomnia.
Brainwave entrainment, also referred to as brainwave
synchronization is the science of bringing two different
entities in sync with each other. It refers to the electrical
response sent out by the brain to rhythmic sensory stimulation,
such as pulses of light or sound.
Scientific researches have proved that two different things
when kept together for a while tend to get entrained to each
other and start performing in entrainment or in sync. This
might sometimes seem to be very unusual and mocked up; however,
it is a fact that our body works in tandem to the frequency
sent out by the brain leading to entrainment.
One of the most popular forms of brainwave entrainment is
binaural beats. Binaural beats work by creating 2 dissimilar
audio tones, and let the brain create its own entrained brain
waves such as alpha - that will facilitate calmness and good
sleep. You can easily avail Brainwave entrainment programs
(available in CDs) that are very useful in transcending the
human mind from beta to alpha entrainment and then gradually
down to theta and finally delta.
Brainwaves & Sleep
• Studies have indicated one of the causes of mild
insomnia to cell phone usage prior to bedtime. It is essential
that brainwaves frequency is moved into the delta stage during
bedtime; which otherwise increase by the use of cell
phone -as the brain moves into heightened alpha
• Exercises of the brain done during daytime are known
to increase delta brainwave frequency during slow-wave sleep at
• Delta brainwaves are instrumental in increasing the
production of the sleep enhancing hormones DHEA and melatonin.
Therefore, on enhancement of DHEA, which is a precursor to
testosterone – body’s most potent energizer hormone; is one of
the most viable reasons leading to a feeling of refreshment and
regained vitality attained after a deep good quality sleep.
• Brainwaves are hugely responsible for ensuring good
sleep and keep you active the following day. The brain requires
a consistent rejuvenating period of delta and theta at night,
so as to retain high levels of focus and concentration (beta
& gamma brainwaves) during the day.
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