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Related Experiment Videos

A sustained hyper-g load as a tool to simulate space sickness.

W Bles1, B de Graaf, J E Bos

  • 1TNO Human Factors Research Institute, Soesterberg, the Netherlands.

Journal of Gravitational Physiology : a Journal of the International Society for Gravitational Physiology
|July 1, 1997
PubMed
Summary
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Centrifuge runs simulating space adaptation syndrome (SAS) induced motion sickness. Astronauts experienced similar symptoms and susceptibility to sickness in space and during ground-based centrifuge tests.

Area of Science:

  • Space physiology
  • Vestibular science
  • Human factors in aerospace

Background:

  • Astronauts experienced space adaptation syndrome (SAS) during the D1 Spacelab Mission, characterized by motion sickness provoked by head movements.
  • Similar symptoms were later induced on Earth via a +3G centrifuge run, termed Sickness Induced by Centrifugation (SIC).

Purpose of the Study:

  • To investigate if SIC could effectively simulate SAS on Earth.
  • To determine the nature of the stimulus causing SIC, its incidence, and underlying mechanisms.
  • To explore changes in visual-vestibular interaction post-centrifuge exposure.

Main Methods:

  • Exposing European scientist astronauts to a 1.5-hour +3G centrifuge run in a supine position.
  • Provoking motion sickness symptoms through head movements after centrifugation.

Related Experiment Videos

  • Conducting otolith function tests to assess visual-vestibular interactions.
  • Performing subsequent experiments on astronauts and healthy subjects to analyze SIC.

    • Main Results:

    • Astronauts reported strong similarities between SIC and SAS, including symptom type and susceptibility ranking.
    • Otolith function tests revealed changes in visual-vestibular interaction post-centrifuge, mirroring findings from space missions.
    • Experiments confirmed that SIC could be a viable Earth-based model for studying SAS.

    Conclusions:

    • Sickness Induced by Centrifugation (SIC) effectively simulates Space Adaptation Syndrome (SAS), offering a valuable ground-based research model.
    • The findings suggest a common physiological basis for motion sickness experienced in space and during simulated conditions.
    • Further research is warranted to fully elucidate the cardio-vascular and vestibular mechanisms underlying SIC and SAS.