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.
Virtual reality headset
The virtual reality headset helps with therapy. People with mental health and addiction issues use therapy by virtual reality headsets to help get over these issues. The Virtual Reality Headset helped patients get over fear, anxiety, panic, and acrophobia. One patient was exposed to a virtual spider for 50 minutes a day over the course of a 12 week period. The Virtual Reality Headset also was used for exercising. Many exercising programs and sports games were created. When a patient is going through therapy, the patient has control over the exposure they have. During the exposure, the patients thoughts, feelings, muscle tension, and heart rate are all observed. Virtual Reality has psychological principles from cognitive-behavioral therapies, neurobiology, neurophysiology, existentialism, and psycho dynamic conceptualizations and knowledge in behavioral neuroscience. The Virtual Reality Headset helped patients get some emotional relief from their day-to-day medications.