A dozen years ago, Peter Suedfeld introduced the world to the term "REST' to describe the modern technique or therapy involving Restricted Environmental Stimulation. At the time, REST was still equated with "sensory deprivation". Textbooks in psychology and psychiatry cited primarily the work of the 1950s and 60s which suggested that reduction of normal levels of stimulation was, in a sense, a form of torture producing severe psychological disturbances...