Mind machine (or brain machine, psychowalkman, or Auditory Visual Stimulation Devices (AVS device)) is a small electronic device 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. These machines 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 said as brainwave synchronisation or entrainment.