Sutherland I.E.in 1965, the very first idea of Virtual Reality was presented by Ivan Sutherland “make that (virtual) world in the window look real, sound real, feel real and respond realistically to the viewer’s actions”. It made fundamental contributions in the area of human-computer interaction, being one of the first graphical user interfaces. It exploited the light pen, the predecessor of the mouse, allowing the user to point at and interacts with …show more content…
Since the technology provides different types of sources for visual perception, the effectiveness and efficiency of visual and cognitive tasks in these simulated environments can be affected either in a positive or a negative way. To understand these effects, it’s necessary to examine our visual perception and the mechanisms of human cognitive in virtual environments. The earlier paper-pen test was used for psychological tests like attention process, workload etc.
• With the advancement of technology, various computer- based test batteries like VTS (Vienna test system), WAIS, CPI etc. have been …show more content…
Virtual reality is experienced through two senses out of five those are sight and sound. Virtual Environments are new types of human-computer interaction interfaces which help the users to perceive and act in a three-dimensional virtual world. A 3-D image is the simplest form of virtual reality. The 3-D images can be explored efficiently with the help of the computer, usually by keyboard keys or by using the mouse, so that the content of the image can be movable in some direction or zooms in or out (Roy, S.,2003). Wearable computers and Haptic devices help in making virtual reality more sophisticated and realistic. The user experiences the 3D world from the first person point of