SHARM Article - Brainwaves Entrianment

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Brainwave Entrainment

Our brain operates by producing electrical pulses. The activity of the brain can be tracked as electrical waves, called brainwaves.

Many frequencies can be detected in every given moment, but there is always a predominant frequency. Brainwaves are measured in Hertz (Hz). A brainwave frequency of 20 cycles per second is measured as 20 Hz.

Scientists have found a link between different brainwave frequencies and the different mind states. The dominant brainwave frequency determines our state of mind in each moment. For example, if you are in a beta state of alertness, some alpha frequencies can also be detected, but the dominant frequencies would be in the beta range.

The Entrainment Effect

Brainwave Entrainment is a process in which one sound source influences another to create a synchronized frequency. Striking a tuning fork will make a second tuning fork resonate at the same frequency. In a similar way, the brain entrainment phenomena can be used to synchronize your brain to specific frequencies.

BETA Waves 14 to 30 Hz

Beta waves, the fastest waves most commonly found during our waking state, are associated with outward awareness, the engaging mind, perception and the evaluation of data through the senses.

ALPHA Waves 8 to 14 Hz

Alpha waves are associated with the non-drowsy but relaxed, tranquil state of consciousness, the less engaging mind, pleasant inward awareness, body/mind integration. The alpha waves are present during meditation and states of relaxation and are considered the gateway to our creativity.

THETA waves 4 to 8 Hz

Theta waves are associated with increased recall, creativity, imagery and visualization, free-flowing thought, future planning and inspiration. Theta waves are present during dreaming and REM states.

DELTA waves 0.5 to 4 Hz

Delta waves, associated with deep dreamless sleep, are present during non-REM sleep. The deep trance state causes pituitary release of growth hormone and self-healing.

Binaural Beats

The binaural beat effect can be heard when tones at slightly different pitches are played separately into each ear. The left hemisphere in the brain processes the sounds that come from the right ear, and the right hemisphere processes the sounds that come from the left ear. As the brain tries to “gap” the pitch difference between both ears, synchronization of the hemispheres in the brain occurs.

Monaural Beats

The monaural beat sound pulses with exactly matched frequency in both ears.

Isochronic Tones

Isochronic tones sound more like pulses and may have stronger influence.