Bilateral Beats

Most brain waves are characterized by frequencies that are below the audible range. Therefore, if you want to try stimulating your brain using sound, you first need to convert those sub-frequencies into something you can hear. That can be achieved by using a carrier that is located in the audible range, and modulating this carrier with the frequency that corresponds to the brain wave one wants to heighten. Different modulation techniques can be used. Isochronic Tones modulate the amplitude of the carrier, while bilateral beats — the method used by this generator — modulates the stereo image of the sound. Therefore, using headphones is highly recommended to achieve the strongest modulation effect, with this one.

Brain Waves (brainwaves) Entrainment

Brainwaves are electrical activity patterns caused by the neurons of the brain communicating with each other. Brainwaves can be detected using sensitive medical equipment such as an EEG. They provide an indication of the mental state of an individual.

Brainwaves are divided into four main categories: the Delta waves, when deep sleep occurs; the Theta waves, associated with a state of somnolence and reduced consciousness; the Alpha waves, when we are in a state of physical and mental relaxation; and the Beta waves, emitted when we are consciously alert, or when we feel agitated or tense.

Brainwave frequencies are in the range of 0.1 to 4 (Delta), 4 to 7 (Theta), 7 to 13 (Alpha) and 13 to 30 (Beta) cycles per second (Hz).

Brainwave entrainement (or synchronization), aims to cause our brainwave frequencies to fall into step with a periodic stimulus having a frequency corresponding to the intended brain-state. This can be used, for example, to induce sleep. This page uses bilateral beats as auditory stimuli.

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