Virtual reality sickness is different from motion sickness in that it can be caused by the visually-induced perception of self-motion; real self-motion is not needed.[1] It is also different from simulator sickness; non-virtual reality simulator sickness tends to be characterized by oculomotor disturbances, whereas virtual reality sickness tends to be characterized by disorientation.[5][6]
^Stanney, K. M.; Kennedy, R. S.; Drexler, J. M. (1997). "Cybersickness is not simulator sickness". Proceedings of the Human Factors and Ergonomics Society Annual Meeting. 41 (2): 1138–1142. doi:10.1177/107118139704100292. S2CID70690770.