Blair Witch was filmed with a handheld camcorder, which was subjected to considerably more motion than the average movie camera, and lacks the stabilization mechanisms of steadicams.Home movies, often filmed with a cell phone camera, also tend to cause motion sickness in those who view them. The person holding the cell phone or other camera usually is unaware of this as the recording is being made since the sense of motion seems to match the motion seen through the cameras viewfinder. Those who view the film afterward only see the movement, which may be considerable, without any sense of motion. Using the zoom function seems to contribute to motion sickness as well since zooming is not a normal function of the eye. The use of a tripod or a camera or cell phone with image stabilization while filming can reduce this effect. Virtual reality
Motion sickness due to virtual reality is very similar to simulation sickness and motion sickness due to films. In virtual reality the effect is made more acute as all external reference points are blocked from vision, the simulated images are 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.
Other conditions that may present similarly include vestibular disorders such as benign paroxysmal positional vertigo and vestibular migraine and stroke. Treatment
Treatment may include behavioral measures or medications. Behavioral measures
Behavioral measures to decrease motion sickness include holding the head still and lying on the back. Focusing on the horizon may also be useful. Listening to music, mindful breathing, being the driver, and not reading while moving are other techniques.Habituation is the most effective technique but requires significant time. It is often used by the military for pilots. These techniques must be carried out at least every week to retain effectiveness.A head-worn, computer device with a transparent display can be used to mitigate the effects of motion sickness (and spatial disorientation) if visual indicators of the wearers head position are shown. Such a device functions by providing the wearer with digital reference lines in their field of vision that indicate the horizons position relative to the users head. This is accomplished by combining readings from accelerometers and gyroscopes mounted in the device. This technology has been implemented in both standalone devices and Google Glass. One promising looking treatment is to wear LCD shutter glasses that create a stroboscopic vision of 4 Hz with a dwell of 10 milliseconds. Medication
Three types of medications are useful: antimuscarinics such as scopolamine, H1 antihistamines such as dimenhydrinate, and amphetamines such as dexamphetamine. Benefits are greater if used before the onset of symptoms or shortly after symptoms begin. Side effects, however, may limit the use of medications.