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Related Experiment Video

Updated: May 30, 2026

Assessing the Autonomic and Behavioral Effects of Passive Motion in Rats using Elevator Vertical Motion and Ferris-Wheel Rotation
06:18

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Published on: February 7, 2020

Motion sickness: a cholinomimetic agent hypothesis.

Scott E Sheehan1, Charles M Oman, Kevin R Duda

  • 1Brigham and Women's Hospital, Boston, MA, USA. sesheehan@partners.org

Journal of Vestibular Research : Equilibrium & Orientation
|August 18, 2011
PubMed
Summary
This summary is machine-generated.

Motion sickness symptoms may stem from a novel ganglionic cholinomimetic agent released during sensory conflict. This agent affects autonomic pathways, explaining the atypical symptoms observed in motion sickness.

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Area of Science:

  • Neuroscience
  • Physiology
  • Pharmacology

Background:

  • Motion sickness is characterized by signs and symptoms arising from sensory conflict in the central nervous system's vestibular centers.
  • The autonomic response in motion sickness does not align with typical "fight or flight" or "rest and digest" models.

Purpose of the Study:

  • To propose a new etiologic hypothesis for motion sickness based on a hypothetical ganglionic cholinomimetic agent.
  • To explain the atypical autonomic changes observed in motion sickness.

Main Methods:

  • The study presents a theoretical hypothesis regarding the mechanism of motion sickness.
  • Suggests experimental validation using nicotinic antagonists like mecamylamine in human and animal models.

Main Results:

  • Proposes that a slowly released ganglionic cholinomimetic agent accumulates systemically, stimulating autonomic ganglia and potentiating central emetic pathways.
  • Hypothesizes that adrenal catecholamine release modulates the effects of ganglionic stimulation, leading to unique autonomic patterns.

Conclusions:

  • The proposed hypothesis offers a unifying explanation for the complex autonomic and emetic responses in motion sickness.
  • Mecamylamine is suggested as a potential experimental tool to investigate this cholinomimetic agent hypothesis.