What is Brainwave Entrainment?

To better understand brainwave entrainment (BWE), it’s necessary to learn a bit about our brain and its brainwaves.

Our brain is an electro-chemical organ and as such, electromagnetic impulses and chemical substances regulate its functions. Endorphins, adrenaline and serotonin are some of those chemicals, but for the purpose of this article let’s concentrate in the electromagnetic impulses or brainwaves.

Our brain activity encompasses four different types of waves: Beta, Alpha, Delta and Theta, which in that order represent the range from the most to the least activity. Let’s explore them in more depth.

Beta Waves

They are present when the brain is actively engaged in a specific activity or set of activities. They occur when we are awake, at work, watching, talking, doing, studying, listening, touching, tasting, learning, and thinking. Mainly, our analytic, logical, left brain is at work. A teacher, a public speaker, a car racer, and a person engaged in an argument would all be in beta wave state. These waves are low in amplitude with ranges between 13 to 30 cycles per second. These are the fastest of the four brain waves.

Alpha Waves

These represent the opposite to beta waves. These happen when we are inactive, sluggish, calm, or not aroused. These waves are higher in amplitude with ranges between 8 and 12 cycles per second; thus, they are slower than beta waves. A person in a relaxed state, meditating, gazing at the horizon or taking a walk at the beach is in alpha state.

brainwavedimTheta Waves

These have much lower frequency and even greater amplitude with ranges between 4 and 7 cycles per second. Do you daydream often? Have you ever got into your car and drove to your destination without remembering what road you took? If so, you were in theta wave state.

You are very relaxed but you can become alert in a fraction of a second if necessary. For instance, if the car in front of you stops abruptly; you react accordingly going to beta wave state immediately.

In theta brain wave state, ideas and aha! moments seem to flow freely, without guilt, judgment or restrictions. This seems to take place when certain tasks become so automatic that our brain disengages from them to dedicate fully to creative and automatic thinking. Our artistic, imaginative right brain is activated when this happens.

Let’s say that you have spent countless hours trying to come up with the perfect solution for a problem to no avail. Then, out of nowhere a wonderful idea to resolve that situation pops into your mind while taking a shower. If this has happened to you, now you know that your theta brain waves were at work.

Delta Waves

These are of the greatest amplitude with ranges between 1 to 3 cycles per second. Their frequency is the slowest of all brain waves. Every night we go through the sequence of beta, alpha, theta and finally, delta wave state when we reach deep sleep. At this state our brain wave cycles are between 2 to 3 per second.

In healthy sleep patterns, our brain waves oscillate between delta and theta cycles all throughout the night. When delta waves increase above 4 cycles per second, we enter the theta wave state where REM (rapid eye movement) and active dreaming take place, only to slow down and fall to delta brain wave again after a few minutes.

The same process occurs in the morning, just in the opposite direction. We go from delta or theta into alpha and beta to become fully awake and ready to perform our daily tasks.

All four brain waves are present simultaneously in all human brains at all times; however, one of them becomes predominant at any specific moment according to the activity at hand.

There is a fifth type of brainwave called the Gamma Wave. Most researchers consider them a part of the Beta Waves which is why we don’t hear about these often. Gamma Waves are present when we experience acute perception, sharp focus and concentration, and while performing higher level cognitive activities in states of total consciousness. Thus, they have been linked to higher thinking and reasoning abilities. Their range is of 31 cycles and above per second.


Brainwave Entrainment (or BWE) is a practice in which sound pulses are used to synchronize the brain waves into a desired frequency. It is based on a technology known as binaural beats.

In the brainwave entrainment practice, each brain hemisphere is targeted individually by sending different sounds through each ear utilizing stereo headphones. The brain responds by adjusting the sound between the two tones and synchronizing the two hemispheres naturally with the beat frequencies. Most of the time, this happens within a few minutes.

Let’s say that your right ear receives a sound at 410 Hz and the left one at 420 Hz. Your brain will balance the signal to the point that both hemispheres are operating in unison. In this example, your brain waves would oscillate at 10 Hz (the difference between 420 and 410 Hz) inducing the very relaxed state known as alpha, as explained above.

This state can also be achieved with hypnosis. In alpha state we are highly receptive to suggestions.

Also, it is possible to induce mixed brain waves of different frequencies by utilizing mixed binaural tones in BWE. This can produce quite unusual states such as out-of-body experiences, and other altered states of consciousness.

The Monroe Institute founded by Robert Monroe in the early 70’s, is a non-profit educational and research organization dedicated to the exploration of human consciousness and brainwave entrainment.

Hemi-Synch (short term for Hemispheric Synchronization) is a technology developed by Robert Monroe to synchronize the two hemispheres of the brain (BWE) with the intention to induce certain pre-determined effects.


The BrainEv System is based on Monroe’s findings. It stimulates the creation of new neural pathways between the right and left hemispheres, balancing the brain which leads to a high-performance state that scientists call “whole brain functioning.” You can try brainwave entrainment by requesting a Free Demo at the BrainEv System website.

Years of research have concluded that by altering the human brain waves with sound beats utilizing BWE, brain activity can be changed which directly affects the emotional and mental states. Brainwave entrainment can be done with a definite purpose to improve, modify or adopt a specific behavior, and even heal an array of conditions.

For instance, people who suffer from insomnia can benefit by entraining their brain to the theta state. Children with attention deficit disorder and people that have difficulty with concentration can benefit from brainwave entrainment by synchronizing to their alpha state, a very receptive state for learning.

Brainwave Entrainment has also been used to alleviate allergies, improve memory and imagination, increase self-confidence and self-esteem, strengthen the immune system response, eliminate fears and phobias, and even to lower blood pressure, amongst many other conditions.

These are just some of the reasons why many consider Brainwave Entrainment as the ultimate self improvement tool.

I invite you to learn all about BWE’s latest technology and to discover how it can help you achieve your goals by “just listening”. Just click on the banner below and request your Free Demo NOW.