Ataxia following exposure to a virtual environment

Area of Science:

• Human-Computer Interaction
• Virtual Reality
• Human Factors Engineering

Background:

• Virtual environment (VE) technology is advancing, with potential for widespread adoption.
• Simulator sickness, including ataxia (postural unsteadiness), is a known risk of simulator exposure.
• The occurrence of ataxia following VE exposure requires investigation due to safety and liability concerns.

Purpose of the Study:

• To investigate whether virtual environment (VE) exposure leads to ataxic decrements in postural stability.
• To determine if simulator sickness occurs alongside potential postural changes in VE users.

Main Methods:

• A PC-based VE system was used for a 20-minute gaming exposure with 40 undergraduate participants (20 male, 20 female).
• Postural stability was measured using head movement sway velocity along the y-axis.
• Simulator sickness data were also collected to assess its occurrence.

Main Results:

• No ataxic decrements in postural stability were observed following VE exposure.
• Simulator sickness symptoms were reported by participants.

Conclusions:

• Ataxia may not be a significant outcome of short-term VE exposures for non-dynamic tasks.
• Factors such as participant experience, VE adaptation, and immersion details might influence ataxia occurrence.
• Further research is needed to clarify the association between VE use and postural stability.