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Related Experiment Videos

Generalization of tolerance to motion environments.

T G Dobie1, J G May

  • 1Naval Biodynamics Laboratory, New Orleans, LA 70189.

Aviation, Space, and Environmental Medicine
|August 1, 1990
PubMed
Summary

Training to tolerate one type of motion sickness, like visually-induced motion or chair-based motion, can improve tolerance to that specific motion and sometimes generalize to other motion experiences.

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Area of Science:

  • Human physiology
  • Vestibular system research
  • Motion sickness research

Background:

  • Motion sickness is a common condition affecting many individuals.
  • Understanding the mechanisms of tolerance and generalization is crucial for developing effective countermeasures.
  • Previous research suggests potential for habituation but lacks comprehensive investigation into generalization across different motion stimuli.

Purpose of the Study:

  • To investigate the extent to which training tolerance to a specific motion stimulus generalizes to other motion experiences.
  • To determine if specific training protocols can enhance tolerance to visually-induced motion, chair-based motion, and VDT-displayed motion.
  • To explore the presence of both specific and general components in the learning process for motion tolerance.

Main Methods:

  • Twenty subjects susceptible to motion sickness were pretested on three motion stimuli: Dichgans and Brandt drum (visually-induced apparent motion), VDT display (expanding surface), and a revolving/tilting chair.
  • Subjects were assigned to one of four groups: control (cognitive counseling only) or treatment (counseling plus incremental exposure to the drum, chair, or VDT).
  • Posttesting was conducted on each apparatus to assess changes in motion tolerance following the intervention.

Main Results:

  • Training with the revolving/tilting chair and the Dichgans and Brandt drum resulted in specific increases in tolerance to the respective motion stimuli.
  • Exposure to the revolving/tilting chair led to a generalized increase in tolerance to visually-induced motion.
  • Control subjects showed no significant changes in motion tolerance.

Conclusions:

  • Learning to tolerate motion environments involves both specific adaptations to particular stimuli and more generalizable components.
  • Revolving/tilting chair training appears particularly effective in inducing generalized tolerance, suggesting its utility in broader motion sickness management.
  • These findings support the development of targeted training strategies for motion sickness, considering both specific and generalizable effects.

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