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Related Experiment Video

Updated: Feb 14, 2026

How to Study Placebo Responses in Motion Sickness with a Rotation Chair Paradigm in Healthy Participants
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Intravestibular Balance and Motion Sickness.

Fred H Previc1

  • 1Department of Psychology, University of Texas at San Antonio, TX, USA.

Aerospace Medicine and Human Performance
|February 22, 2018
PubMed
Summary

An imbalance between the semicircular canals and otolith organs in the labyrinth causes motion sickness. This new theory explains major findings and integrates existing research on vestibular imbalance.

Area of Science:

  • Neuroscience
  • Vestibular System Physiology

Background:

  • Current theories on motion sickness etiology have limitations.
  • The labyrinth contains two major organs: semicircular canals and otolith organs.

Purpose of the Study:

  • To present a new theory explaining motion sickness.
  • To synthesize existing theories on motion sickness etiology.

Main Methods:

  • Outlined strengths and limitations of current motion sickness theories.
  • Described the roles of semicircular canals and otolith organs in motion sickness.

Main Results:

  • The proposed theory explains numerous findings related to motion sickness.
  • The theory integrates various current hypotheses on motion sickness.

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Last Updated: Feb 14, 2026

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Conclusions:

  • Vestibular imbalance contributes to motion sickness.
  • Differences in autonomic control between canals and otoliths may underlie motion sickness.