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Virtual reality ( VR) is a simulated experience that employs 3D near-eye displays and pose tracking to give the user an immersive feel of a virtual world. Applications of virtual reality include entertainment (particularly video games ), education (such as medical, safety or military training) and business (such as virtual meetings).
Extended reality (XR) is an umbrella term to refer to augmented reality (AR), virtual reality (VR), and mixed reality (MR). The technology is intended to combine or mirror the physical world with a " digital twin world" able to interact with it, [1] [2] giving users an immersive experience by being in a virtual or augmented environment.
Avatars socialising in the virtual world Second Life The metaverse is a loosely defined term referring to virtual worlds in which users represented by avatars interact, usually in 3D and focused on social and economic connection. The term metaverse originated in the 1992 science fiction novel Snow Crash as a portmanteau of "meta" and "universe". In Snow Crash, the metaverse is envisioned as a ...
Virtual reality headset. A virtual reality headset (or VR headset) is a head-mounted device that uses 3D near-eye displays and positional tracking to provide a virtual reality environment for the user. VR headsets are widely used with VR video games, but they are also used in other applications, including simulators and trainers.
Augmented reality ( AR) is an interactive experience that combines the real world and computer-generated 3D content. The content can span multiple sensory modalities, including visual, auditory, haptic, somatosensory and olfactory. [1] AR can be defined as a system that incorporates three basic features: a combination of real and virtual worlds ...
A single study of military veterans and active-duty personnel with combat-related PTSD found that virtual reality sessions, along with other treatments, led to less social isolation, depression ...
Haptic technology. Haptic technology (also kinaesthetic communication or 3D touch) [1] [2] is technology that can create an experience of touch by applying forces, vibrations, or motions to the user. [3] These technologies can be used to create virtual objects in a computer simulation, to control virtual objects, and to enhance remote control ...
Virtual reality exposure therapy (VRET) is a form of exposure therapy for treating anxiety disorders such as post traumatic stress disorder (PTSD) and phobias. Studies have indicated that combining VRET with behavioral therapy, patients experience a reduction of symptoms. [15] [16] In some cases, patients no longer met the DSM-V criteria for PTSD.
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