What is the pathophysiology of motion sickness?

Updated: Oct 22, 2018
  • Author: Andrew Brainard, MD, MPH; Chief Editor: Selim R Benbadis, MD  more...
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The brain estimates motion based on the combined input from vestibular, visual, and proprioceptive receptors. Motion sickness most likley occurs when the stimuli applied to these receptors appear to be in conflict. This apparent conflict causes more severe symptoms when the patient is passively moved at certain frequencies. It is much less common during active movements such as walking or swimming.

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