A mind machine (in some countries called a psychowalkman) uses sound and/or
light to alter the brainwave frequency of the
user, resulting in altered states of consciousness that have been
compared to those obtained from meditation and shamanic
exploration.
The process is also known as brainwave synchronization or entrainment.
Overview
Mind machines typically consist of a control unit, a pair of headphones and/or
strobe light goggles. The unit controls the
sessions and drives the LEDs in the
goggles. Professionally, they are usually referred to as Auditory Visual Stimumation Devices (AVS devices).
Sessions will typically aim at directing the average brainwave frequency from
a high level to a lower level by ramping down in several sequences. Target frequencies in higher-end machines are typically in
the alpha wave area in the frequency range of 8-12 Hz, or in the beta wave area in the
frequency range of 13-40 hertz (Hz), and can be adjusted by the user based on the desired resulting effects.
Mind machines are often used together with biofeedback or neurofeedback equipment in order to adjust the frequency on the fly.
Modern mind machines can connect to the Internet to update the software and download new sessions. When sessions are used in conjunction with meditation, neurofeedback, etc. the effect can be amplified.
Some clinical research has been done on the use of auditory and visual stimulation to improve cognitive abilities in
learning-disabled children (research)
Safety
Rapidly flashing lights may be dangerous for people with photosensitive
epilepsy or other nervous disorders. It is thought that one out of 4,000 adults will experience a seizure while viewing
such a device; about twice as many children will have a similar ill effect.[1]
See also
References
External links
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