VR Three Illusions

Place illusion and Plausibility can lead to realistic behaviour in immersive virtual environments by Mel Slater: ” 

“The first is ‘being there’, often called ‘presence’, the quality of having a sensation of being in a real place. We call this place illusion (PI). Second, plausibility illusion (Psi) refers to the illusion that the scenario being depicted is actually occurring. In the case of both PI and Psi the participant knows for sure that they are not ‘there’ and that the events are not occurring. PI is constrained by the sensorimotor contingencies afforded by the virtual reality system. Psi is determined by the extent to which the system can produce events that directly relate to the participant, the overall credibility of the scenario being depicted in comparison with expectations.“…..

“An ideal IVR system will typically consist of a set of displays (visual, auditory, haptic) and a tracking system”…….

“The visual images displayed will be determined as a function of at least the position and orientation of the human participant’s head, enabled through head tracking, and ideally should also include tactile, force-feedback, heat and smell displays so that all of the senses may be catered for.”…………..