Understanding Individual Motion Sickness Susceptibility
The Roles of Rotational Motion Perception and Postural Stability
T.M.K. Coutuer (TU Delft - Mechanical Engineering)
R. Happee – Graduation committee member (TU Delft - Mechanical Engineering)
V. Kotian – Mentor (TU Delft - Mechanical Engineering)
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Abstract
The development of automated vehicles is progressing rapidly. This comes with numerous benefits, including increased safety, accessibility, and productivity, as well as reduced emissions and traffic. However, many challenges remain. One of the drawbacks is increased susceptibility to motion sickness due to the lack of control and the inability to anticipate motion as a passenger.
Motion sickness is a complex phenomenon generally believed to be influenced by sensory conflict; however, it is increasingly recognized as involving postural stability and head-neck stabilization. Despite extensive research on motion sickness, many studies examine motion perception and postural stability in isolation, without considering their interaction. Furthermore, while it is known that sensory reliance and motor strategies are individually dependent, this is rarely incorporated in existing models.
In this thesis, these gaps will be addressed by employing an experimental approach to investigate the relationships among individual differences in rotational motion perception, postural stability, and sensitivity to motion sickness. This is achieved by performing a structured experiment in which participants are exposed to dynamic motion while their postural sway, motion perception, dynamic head stabilization, and susceptibility to motion sickness are examined.
A significant positive correlation was found between the velocity storage time constant and motion sickness severity (ρ = 0.528, p = 0.012), suggesting that the EVAR paradigm may serve as a prescreening method for motion sickness susceptibility. No significant correlation was found between motion sickness severity and postural sway or dynamic stabilization, suggesting that these measures may not be appropriate to screen individuals for motion sickness susceptibility.