The human brain is such a complex organ that no one has been able to understand its working completely, even after years of research. The brain is responsible for the working of the human body as a whole. Researchers have noticed that by providing auditory stimulus (sound), they can influence the brainwave activity. This phenomenon is called audio brainwave stimulation. But before we go into that, you need to understand what brainwaves are.
An Introduction to Brainwaves:
The brain is made up of hundreds of millions of brain cells that are called neurons. Over the years, researchers have identified that neurons communicate with each other in the form of electrical impulses. These impulses can be detected by sensitive measuring instruments like the EEG. If you observe the electrical activity in the brain as a whole, you will see that there are patterns in the activity that depends upon the state of your brain. These brainwaves can be broadly classified into four groups: alpha, beta, theta, and delta.
Alpha Waves: These waves are emitted when you are in a relaxed physical and mental condition but completely aware of your surroundings. They are emitted at the rate of 7-13Hz (pulses/second)
Beta Waves: These waves are emitted when you are alert, agitated, or in an excited state. They are emitted at the rate of 13-60Hz depending on how alert or excited you are.
Theta Waves: These waves are produced when you are in a semiconscious state, for example, when you are inebriated. They are emitted at 4-7Hz.
Delta Waves: These waves are emitted when you are unconscious or in deep sleep. They are emitted at 0.1-4Hz.
Basis for Audio Brainwave Stimulation:
Researchers have theorized that if they can influence the pattern of brainwaves through auditory stimulus, they can control the state of the human brain, and hence the body and mindset. For example, you may be agitated or scared. But through external auditory stimulus, if your brain can be stimulated to produce alpha waves, you will immediately become relaxed. Researchers have actually succeeded in achieving this.