Mind States
An Introduction to Light & Sound
by Michael Landgraf

I. Welcome To Light & Sound Technology
A. What Is A Light & Sound Instrument?

A light and sound instrument is a mind entrainment tool. The method by which this entrainment occurs is known as the Frequency Following Response (FFR). Through the use of audio (headphones) and visual (eye frames with LEDs) stimulation, listeners are gently guided into specific states of mind. Each audio beat and light pulse is a specific frequency. Our minds "think" in terms of frequency. Brainwaves change frequencies based on neural activity within the brain, be it by hearing, touch, smell, vision and/or taste. These senses respond to activity from the environment and transmits that information to the brain via electrical signals. Hearing and vision are considered the favorable senses for affecting brainwaves safely. By presenting these beats and pulses to the brain, within a few minutes, the brain begins to mimic or follow the same frequencies as the stimuli (the beats and pulses). This process is referred to as entrainment. In essence, these instruments speak to the mind in it's own language - the language of frequency.

Taken from:
Mind States
An Introduction to Light & Sound
by Michael Landgraf
Page 7, Paragraph 1


II. Accessing Brain States With Light & Sound And Sound Only Instruments
B. Peak Performing In Beta.

Utilizing beat sessions can add to the quality of our day. You can increase your performance, your productivity, your ability to stay on task and fulfill your responsibilities. Beta light and sound sessions are energizing. They help you get going. Chemical stimulants cannot compare. Chemical stimulants have been known to produce negative side effects (i.e. physical shakiness and grumpy attitude as the effects subside). Beta/energize sessions have no negative side effects.

Taken from:
Mind States
An Introduction to Light & Sound
by Michael Landgraf
Page 23, Paragraph 6