Virtual reality
Around the same time, Douglas Engelbart used computer screens both as input and output devices. In 1968, Ivan Sutherland, with the help of many students including Bob Sproull, created what was widely considered to be the first head-mounted display (HMD) system for use in immersive simulation applications. It was primitive both in terms of user interface and realism, and the HMD to be worn by the user was so heavy that it had to be suspended from the ceiling. The graphics comprising the virtual environment were simple wire-frame model rooms. The formidable appearance of the device inspired its name, The Sword of Damocles.
Videoplace
In the mid-1970s, Myron Krueger established an artificial reality laboratory called the Videoplace. His idea with the Videoplace was the creation of an artificial reality that surrounded the users, and responded to their movements and actions, without being encumbered by the use of goggles or gloves. The work done in the lab would form the basis of his much cited 1983 book Artificial Reality. The Videoplace (or VIDEOPLACE as Krueger would have it), was the culmination of several iterations of artificial reality systems: GLOWFLOW, METAPLAY, and PSYCHIC SPACE; each offering improvements over the previous installation until VIDEOPLACE was a full blown artificial reality lab at the University of Connecticut.