Mind machine

A mind machine (in some countries called a psychowalkman) uses pulsing rhythmic sound and/or flashing light to alter the brainwave frequency of the user. Mind machines are said to induce deep states of relaxation, concentration, and in some cases altered states of consciousness that have been compared to those obtained from meditation and shamanic exploration.

The process applied by these machines is also known as brainwave synchronisation 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 Stimulation 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 typically correspond to delta (1-3 hertz), theta (4–7 Hz), alpha (8–12 Hz) or beta brain waves (13–40 Hz), and can be adjusted by the user based on the desired 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 10,000 adults will experience a seizure while viewing such a device; about twice as many children will have a similar ill effect.

See also

• Hemi-Sync
• Brainwave synchronization
• Binaural beats
• Dreamachine
• Electroencephalography
• Neurofeedback
• Human enhancement
• Intelligence amplification
• Neural oscillations
• Evoked potential
• Event-related potential
• Induced activity
• Ongoing brain activity
• Psychedelic drug
• Virtual Light & Sound Machine Psychologist simulates visual brainwave entrainment using flashes on computer monitor.
• MBlight A Do-It-Yourself MIDI based Mind Machine.
• Dreamachine Review