The Monroe Institute [is] a cluster of buildings perched on more than 300 acres in the Virginia foothills of the Blue Ridge Mountains. The institute uses audio technology to help induce different states of consciousness. The technology is touted as creating optimal conditions for the brain, leading to peak human performance. A successful radio-broadcasting executive whose company produced 28 shows a month, [founder Robert] Monroe dedicated an arm of his firm to research and development. Monroe and his team ultimately developed Hemi-Sync, an audio technology based on the premise that certain tones can encourage the two hemispheres of the brain to synchronize and move into different states of consciousness. Monroe made numerous recordings that, when used with headphones, send slightly different tones through each ear, helping the brain to create a third binaural beat. The result: a collection of compact discs that purportedly can be used for everything from inducing sleep to increasing memory retention to, as the institute entices on its Web site, reaching extraordinary states. Over the years, Hemi-Sync has garnered three patents and been the subject of research both at the institute and by independent medical professionals, scientists and academics. University studies have discovered that the audio technology can improve the focus of children with developmental disabilities. By the institutes estimates, 30,000 people from around the world have attended its programs, and millions have purchased Hemi-Sync compact discs. For many, the experience is life changing."