Motion sickness causes: Difference between revisions

	Motion sickness Microchapters
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Revision as of 18:43, 1 March 2013

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 {{Motion sickness}}
-{{CMG}} {{AE}} {{VVS}}
+Please help WikiDoc by adding content here.  It's easy!  Click  [[Help:How_to_Edit_a_Page|here]]  to learn about editing.
-==Causes==
-The most common hypothesis for the cause of motion sickness is that it evolved as a defense mechanism against [[neurotoxin]]s.<ref name="GMO">[http://www.brooksidepress.org/Products/OperationalMedicine/DATA/operationalmed/Manuals/GMOManual/clinical/Motion%20sickness.html General Medical Officer (GMO) Manual: Clinical Section: Motion Sickness]</ref> The [[area postrema]] in the [[human brain|brain]] is responsible for inducing vomiting when poisons are detected, and for resolving conflicts between vision and balance. When feeling motion but not seeing it (for example, in a ship with no windows), the [[inner ear]] transmits to the brain that it senses motion, but the eyes tell the brain that everything is still. As a result of the disconcordance, the brain will come to the conclusion that one of them is [[hallucinating]] and further conclude that the hallucination is due to poison ingestion. The [[brain]] responds by inducing vomiting, to clear the supposed toxin.
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