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Updated: May 8, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
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Published on: August 8, 2019

Earth Vertical Motions Disrupt Sleep and Next Day Performance.

Kyle A Kainec1, Allison Ludwig2, Megan Boltz3

  • 1Department of Otolaryngology - Head and Neck Surgery, Ohio State University Wexner Medical Center, Columbus, OH, USA.

Nature and Science of Sleep
|May 7, 2026
PubMed
Summary
This summary is machine-generated.

Overnight vertical motion disrupts sleep, causing distinct arousals and impairing cognitive performance. Reducing motion may improve sleep quality during travel.

Keywords:
arousalscognitionmotionspolysomnographysleepvertical

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Area of Science:

  • Sleep Science
  • Neuroscience
  • Human Factors Engineering

Background:

  • Travel-related sleep disturbances are common, impacting cognitive function.
  • The vestibular system's role in sensing motion and its effect on sleep requires further investigation.
  • Limited research exists on how controlled motion affects sleep and cognitive performance.

Purpose of the Study:

  • To investigate the impact of controlled vertical motion on sleep quality and cognitive performance.
  • To determine if motion-induced sleep arousals differ from natural arousals.
  • To establish the relationship between motion intensity and the likelihood of sleep disruption.

Main Methods:

  • Nine participants underwent a 7-day protocol including home sleep monitoring and lab-based polysomnography.
  • Participants slept on a motion platform subjected to controlled vertical movements (1Hz, up to 120 times/night) at varying intensities.
  • Cognitive performance was assessed using the psychomotor vigilance test at multiple time points.

Main Results:

  • Vertical motion significantly increased sleep arousals (p=0.014) and impaired psychomotor vigilance (p<0.001).
  • Motion-induced arousals were less frequent than natural arousals (p<0.001) and exhibited different spectral power (p=0.002).
  • Higher motion intensity strongly predicted an increased probability of arousal (β=0.0016, p<0.001).

Conclusions:

  • Overnight vertical motion disrupts sleep and leads to distinct arousals.
  • Motion-induced sleep disruption negatively affects cognitive performance.
  • Mitigation strategies for motion exposure could alleviate travel-related sleep disturbances.