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Updated: Sep 1, 2025
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MPI CyberMotion Simulator: Implementation of a Novel Motion Simulator to Investigate Multisensory Path Integration in Three Dimensions
Published on: May 10, 2012
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Human Standing Posture Motion Evaluation by the Visual Simulation of Multi-Directional Sea-Waves
Renon Doine1, Takanori Sakamaki2
1Department of Clinical Engineering, Faculty of Human Care at Makuhari, Tohto University, Chiba 261-0021, Japan.
Sensors (Basel, Switzerland)
|August 12, 2022
Summary
Anticipatory postural adjustments (APAs) help stabilize standing posture by predicting motion, potentially reducing crew fatigue at sea. This study shows visual cues effectively trigger APAs for better postural control.
Area of Science:
- Human Factors and Ergonomics
- Marine Safety
- Biomechanical Engineering
Background:
- Crew fatigue from ship motion-induced standing posture instability is a significant risk factor for marine accidents.
- Human standing posture relies on integrated sensory information (visual, vestibular, somatosensory) for maintenance and adjustment.
- Corrective postural reactions (CPR) and anticipatory postural adjustments (APAs) are key mechanisms for maintaining balance during motion.
Purpose of the Study:
- To investigate the role of anticipatory postural adjustments (APAs) in mitigating crew fatigue by stabilizing standing posture.
- To clarify how visual information influences human standing posture control through APAs.
- To understand the relationship between predicted ship motion and postural stability.
Main Methods:
- Participants viewed simulated wave images with varying directions using a visual simulator.
- Standing posture motion was analyzed, focusing on center of pressure (COP) control.
- The study examined how visual input regarding wave direction influenced postural adjustments.
Main Results:
- Participants demonstrated stabilized standing posture by adapting to projected wave directions presented visually.
- This stabilization indicates that individuals can predict ship motion from visual cues and utilize APAs to control their COP.
- Observed individual differences in postural motion suggest subjective variations in APAs based on personal experience.
Conclusions:
- Anticipatory postural adjustments (APAs), driven by visual information, are effective in stabilizing standing posture against simulated ship motion.
- This mechanism holds potential for reducing crew fatigue and enhancing safety in maritime environments.
- Future research should include diverse demographics and randomized controlled trials to generalize findings.
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