Editing Motion sickness (section)

=== Sensory conflict theory ===
Contemporary sensory conflict theory, referring to "a discontinuity between either visual, proprioceptive, and somatosensory input, or semicircular canal and otolith input", is probably the most thoroughly studied.<ref>{{Cite journal |pmid = 6870740|year = 1983|last1 = Kohl|first1 = R. L.|title = Sensory conflict theory of space motion sickness: An anatomical location for the neuroconflict|journal = Aviation, Space, and Environmental Medicine|volume = 54|issue = 5|pages = 464–5}}</ref> According to this theory, when the brain presents the mind with two incongruous states of motion, the result is often nausea and other symptoms of disorientation known as motion sickness.{{why|reason=This restates the causes section without explaining why the body responds in this way.|date=April 2024}} Such conditions happen when the [[vestibular system]] and the [[visual system]] do not present a synchronized and unified representation of one's body and surroundings.<ref>{{Cite web |title=How To Cure Motion Sickness Permanently |url=https://curemotionsickness.com/ |access-date=2022-11-16 |website=Captain Arthur's |language=en-US}}</ref>

According to sensory conflict theory, the cause of terrestrial motion sickness is the opposite of the cause of space motion sickness. The former occurs when one perceives visually that one's surroundings are relatively immobile while the [[vestibular system]] reports that one's body is in motion relative to its surroundings.<ref name="Benson 2002" /> The latter can occur when the visual system perceives that one's surroundings are in motion while the vestibular system reports relative bodily immobility (as in zero gravity.){{citation needed|date=July 2021}}