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Linking cognitive functioning and postural balance control through virtual reality environmental manipulations.

Yu Imaoka1, Laura Hauri1, Andri Flury1

  • 1Motor Control and Learning Laboratory, Institute of Human Movement Sciences and Sport, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland.

Frontiers in Aging Neuroscience
|September 19, 2022
PubMed
Summary

Head-mounted display virtual reality (VR) can assess postural sway to help screen for dementia risk. Cognitive function in older adults is linked to how their posture changes with VR visual stimuli.

Keywords:
cognitive functioncognitive impairmentdementiadual taskhead-mounted display virtual reality technologyposturesaccadevestibular

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Area of Science:

  • Neuroscience
  • Gerontology
  • Biomedical Engineering

Background:

  • Dementia presents a growing global health challenge, necessitating early detection methods.
  • Vestibular dysfunction is increasingly recognized as a potential indicator of cognitive impairment.
  • Head-mounted display (HMD) virtual reality (VR) offers a novel approach to stimulate vestibular function and assess related cognitive changes.

Purpose of the Study:

  • To investigate the impact of HMD-based VR visual stimuli on the postural stability of older adults.
  • To explore the correlation between VR-induced postural sway patterns and cognitive performance in this demographic.

Main Methods:

  • A cross-sectional study design was employed, utilizing an optokinetic (OKR) VR environment with oscillating visual stimuli.
  • Center of pressure (COP) displacement was measured in adults aged 65 and over.
  • The frequency response of COP was analyzed and compared with Montreal Cognitive Assessment (MoCA) scores.

Main Results:

  • The OKR VR environment elicited distinct anterior-posterior postural sway responses.
  • A significant correlation was found between cognitive test scores and the frequency response of postural sway (0-0.5Hz), indicating a link between the visual-vestibular system and cognitive function (r = 0.45, P = 0.03).

Conclusions:

  • HMD-based VR visual stimuli may reveal a connection between cognitive function and postural control.
  • Assessing stimulated postural sway could serve as a simple screening tool for cognitive functioning.
  • Further research is needed to elucidate the specific roles of the vestibular system and spatial cognition in this assessment paradigm.