The Neuro Programmer 2 affects the mind through a neurological process known as brainwave entrainment.

When neurologists first began to measure the brain's response to stimuli, it was found that if light and sound stimuli were precisely timed to the electrical activity of the brain, brainwave patterns could actually be altered.

In turn, the mental state of a person could reliably be changed.

As an example, someone who is wide awake may start to feel relaxed and drowsy when given a stimulus corresponding to a relaxed brainwave pattern. This has become known as audio/visual brainwave entrainment.

Today, 70 years after the discovery of this effect, brainwave entrainment is widely used for a huge variety of purposes, not only to measure the brain's response, but also to train the brain to a particular mental state. It has become so widely used that many clinical EEG units come with entrainment devices.

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