Hemi-Sync relaxation tape encourages the brain to produce brain waves that
are naturally characteristic of a relaxed state; when you want an especially
sharp focus of attention for peak performance, a concentration tape helps
your brain achieve this goal.
Hemi-Sync is a state-of-the-art audio technology that enables us to mobilize
and direct the power of our mind. Developed and refined by The Monroe
Institute during 40 years of research, awarded U.S. government patents, and
internationally recognized in the field of brain/mind investigation, this
remarkable technology has benefited hundreds of thousands of people.