Accepted for/Published in: JMIR Research Protocols
Date Submitted: Oct 26, 2019
Date Accepted: May 19, 2020
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Visual Fixations and Motion Sensitivity: An exploratory study
ABSTRACT
Background:
Motion sensitivity after vestibular disorders is associated with symptoms of nausea, dizziness, and imbalance in busy environments. Dizziness and imbalance is reported in places such as supermarkets and shopping malls which have unstable visual backgrounds, however, the mechanism of motion sensitivity is poorly understood. The main aim of this exploratory observational study is to investigate visual fixations and postural sway in response to increasingly complex visual environments in healthy adults and adults with motion sensitivity.
Objective:
To conduct an observational study with 40 adults (20 in each group; healthy adults and adults with motion sensitivity). The study will determine whether complex visual environments are associated with fixational instability, increased postural sway, and altered kinematics in adults with motion sensitivity compared to healthy adults.
Methods:
Twenty healthy adults and 20 adults with motion sensitivity will be recruited for this study. Visual fixation, postural sway, and body kinematics will be measured with a mobile eye tracker device, force plate, and 3d motion capture system, respectively. Participants will be exposed to experimental tasks requiring visual fixation on letters, projected on a range of backgrounds on a large screen during quiet stance. Results will be reported in means and standard deviations for the outcome measures. The effect size and their 95% confidence intervals will also be reported. Analysis will be performed using linear mixed models.
Results:
It is an ongoing study. Data collection is not completed.
Conclusions:
This study will provide a detailed investigation of visual fixations in response to increasingly complex visual environments. Investigating characteristics of visual fixations in healthy adults and those with motion sensitivity will provide insight in to this disabling condition and may inform the development of new interventions strategies which explicitly cater to the needs of this population. Clinical Trial: Australian New Zealand Clinical Trials Registry, ACTRN12619000254190, February 2019
Citation
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Copyright
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