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Related Experiment Videos

Human heart rate variability relation is unchanged during motion sickness

T J Mullen1, R D Berger, C M Oman

  • 1Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, USA. tjm@atrium.mit.edu

Journal of Vestibular Research : Equilibrium & Orientation
|January 7, 1998
PubMed
Summary

This study found no changes in autonomic control of heart rate during motion sickness using a new technique. Findings suggest motion sickness is not a generalized autonomic response.

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Area of Science:

  • Physiology
  • Neuroscience
  • Human Subject Research

Background:

  • Autonomic nervous system (ANS) plays a crucial role in physiological responses.
  • Motion sickness is a complex condition with debated autonomic involvement.
  • Quantifying autonomic activity during motion sickness requires precise methodologies.

Purpose of the Study:

  • To investigate autonomic activity during motion sickness using a novel transfer function analysis.
  • To determine if rotation or motion sickness alters the autonomic control of heart rate.
  • To assess if motion sickness is characterized by a generalized autonomic response.

Main Methods:

  • Applied transfer function analysis between instantaneous lung volume (ILV) and instantaneous heart rate (HR).
Keywords:
NASA Discipline NeuroscienceNon-NASA Center

Related Experiment Videos

  • Recorded ILV and electrocardiogram (ECG) in 18 human subjects under three conditions: resting, sinusoidal rotation, and motion sickness with prism goggles.
  • Analyzed changes in ILV-HR transfer functions to infer autonomic control.

    • Main Results:

    • No significant changes in ILV-HR transfer functions were observed during rotation alone.
    • No significant changes in autonomic control of heart rate were detected during moderate motion sickness.
    • The study did not find evidence supporting a generalized autonomic response during motion sickness.

    Conclusions:

    • The applied transfer function technique did not reveal altered autonomic control of heart rate during motion sickness.
    • Findings challenge the hypothesis that motion sickness is consistently associated with widespread autonomic dysregulation.
    • Further research may be needed to explore specific autonomic pathways involved in motion sickness.