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Airsickness is a sensation which is induced by air travel.[1] It is a specific form of motion sickness and is considered a normal response in healthy individuals. Airsickness occurs when the central nervous system receives conflicting messages from the body (including the inner ear, eyes and muscles) affecting balance and equilibrium. It is essentially the same as carsickness but occurs in an airplane. However, some significant differences are that an airplane may bank and tilt sharply and due to the small window sizes, a passenger is likely to see only the stationary interior of the plane. Another factor is that while in flight, there is little that can be seen outside of the windows that would indicate motion to the visual system.
Sea-sickness Main article: Seasickness Seasickness is a form of motion sickness characterized by a feeling of nausea and, in extreme cases, vertigo experienced after spending time on a craft on water.[1] It is, again, essentially the same as carsickness, though the motion of a watercraft tends to be more constant. It is typically brought on by the rocking motion of the craft[9] or movement while immersed in water.[10] As with airsickness, it can be difficult to visually detect motion even if one looks outside of the boat as water does not offer fixed points with which to visually judge motion. Some people experience car sickness yet they don't experience seasickness. Also it tends to be worse when it's foggy.]Centrifuges
Rotating devices such as centrifuges used in astronaut training and amusement park rides such as the Rotor, Mission: Space and the Gravitron can cause motion sickness in many people. While the interior of the centrifuge does not appear to move, one will experience a sense of movement. In addition, centrifugal force can cause the vestibular system to give one the sense that downward is in the direction away from the center of the centrifuge rather than the true downward direction.
[edit]Dizziness due to spinning
When one spins and stops suddenly, fluid in the inner ear continues to rotate causing a sense of continued spinning while one's visual system no longer detects motion.
Motion that is seen but not felt In these cases, motion is detected by the visual system and hence the motion is seen, but no motion or little motion is sensed by the vestibular system. Motion sickness arising from such situations has been referred to as Visually Induced Motion Sickness (VIMS).[11]
Motion sickness due to films and other video This type of sickness is particularly prevalent when susceptible people are watching films on large screens such as IMAX but may also occur in regular format theaters or even when watching TV. For the sake of novelty, IMAX and other panoramic type theaters often show dramatic motions such as flying over a landscape or riding a roller coaster. There is little way to prevent this type of motion sickness except to close one's eyes during such scenes or to avoid such movies.
In regular format theaters, an example of a movie that caused motion sickness in many people is The Blair Witch Project. Theaters warned patrons of its possible nauseating effects, cautioning pregnant women in particular. Blair Witch was filmed with a handheld camcorder, which was subjected to considerably more motion than the average movie camera.
Home movies, often filmed with a hand-held camera, also tend to cause motion sickness in those that view them. The camera-person rarely notices this during filming since his/her sense of motion matches the motion seen through the camera viewfinder. Those who view the film afterward only see the movement, which may be considerable, without any sense of movement. Using the zoom function seems to contribute to motion sickness as well as zooming is not a normal function of the eye. The use of a tripod or a camcorder with image stabilization technology while filming can minimize this effect.
[edit]Simulation sickness
Simulation sickness, or simulator sickness, is a condition where a person exhibits symptoms similar to motion sickness caused by playing computer/simulation/video games.
The most common theory for the cause of simulation sickness is that the illusion of motion created by the virtual world, combined with the absence of motion detected by the inner ear, causes the area postrema in the human brain to infer that one is hallucinating and further conclude that the hallucination is due to poison ingestion. The brain responds by inducing nausea and mass vomiting, to clear the supposed toxin.[According to this theory, simulation sickness is just another form of motion sickness.
The symptoms are often described as quite similar to that of motion sickness, and can range from headache, drowsiness, nausea, dizziness, vomiting and sweating. Research done at the University of Minnesota had students play Halo for less than an hour, and found that up to 50 percent felt sick afterwards.
In a study conducted by 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 1 hour, 44 (6%) reported that symptoms lasted longer than 4 hours, and 28 (4%) reported that symptoms lasted longer than 6 hours. There were also 4 (1%) reported cases of spontaneously occurring flashbacks."
The phenomenon was well known in popular culture before it was known as simulation sickness. In the 1983 comedy film Joysticks, the manager of a local video arcade says, "The reason why I never play any of these games, well, they make me physically.

Sick Car Wallpapers Free Wallpaper Pics Pictures Hd for Desktop Iphone Mobile HD 1080p

Sick Car Wallpapers Free Wallpaper Pics Pictures Hd for Desktop Iphone Mobile HD 1080p

Sick Car Wallpapers Free Wallpaper Pics Pictures Hd for Desktop Iphone Mobile HD 1080p

Sick Car Wallpapers Free Wallpaper Pics Pictures Hd for Desktop Iphone Mobile HD 1080p

Sick Car Wallpapers Free Wallpaper Pics Pictures Hd for Desktop Iphone Mobile HD 1080p

Sick Car Wallpapers Free Wallpaper Pics Pictures Hd for Desktop Iphone Mobile HD 1080p

Sick Car Wallpapers Free Wallpaper Pics Pictures Hd for Desktop Iphone Mobile HD 1080p

Sick Car Wallpapers Free Wallpaper Pics Pictures Hd for Desktop Iphone Mobile HD 1080p

Sick Car Wallpapers Free Wallpaper Pics Pictures Hd for Desktop Iphone Mobile HD 1080p

Sick Car Wallpapers Free Wallpaper Pics Pictures Hd for Desktop Iphone Mobile HD 1080p

Sick Car Wallpapers Free Wallpaper Pics Pictures Hd for Desktop Iphone Mobile HD 1080p