Editing Motion sickness (section)

====Virtual reality====
{{See also|Virtual reality sickness}}
Motion sickness due to [[virtual reality]] is very similar to simulation sickness and motion sickness due to films.<ref name="ARVI"/>  In virtual reality the effect is made more acute as all external reference points are blocked from vision, the simulated images are [[Stereoscopy|three-dimensional]] and in some cases stereo sound that may also give a sense of motion. The NADS-1, a simulator located at the [[National Advanced Driving Simulator]], is capable of accurately stimulating the vestibular system with a 360-degree horizontal field of view and 13 degrees of freedom motion base.<ref name="NADS"/> Studies have shown that exposure to rotational motions in a virtual environment can cause significant increases in nausea and other symptoms of motion sickness.<ref name="SoLo1999"/>

In a study conducted by the U.S. Army Research Institute for the Behavioral and Social Sciences in a report published May 1995 titled "Technical Report 1027 – Simulator Sickness in Virtual Environments", out of 742 pilot exposures from 11 military flight simulators, "approximately half of the pilots (334) reported post-effects of some kind: 250 (34%) reported that symptoms dissipated in less than one hour, 44 (6%) reported that symptoms lasted longer than four hours, and 28 (4%) reported that symptoms lasted longer than six hours. There were also four (1%) reported cases of spontaneously occurring flashbacks."<ref name="cyberedge" />