Immersive Ecological Virtual Environment for Inducing Balance Disturbances.

Area of Science:

• Human-Computer Interaction
• Biomechanics
• Virtual Reality

Background:

• Assessing user balance is crucial for understanding human locomotion.
• Virtual Environments (VE) offer controlled settings for studying balance.
• Ecological validity in VE research is key for real-world applicability.

Purpose of the Study:

• To evaluate the impact of visual perturbations on user balance in a VE.
• To develop a versatile VR tool simulating diverse, ecologically valid scenarios.
• To collect data on balance responses to unpredictable visual disturbances.

Main Methods:

• Utilized a Virtual Reality (VR) headset with various visual perturbations.
• Employed inertial sensors, electromyography, and galvanic skin response for data capture.
• Collected data in a simulated household environment with unpredictable disturbances.

Main Results:

• Statistical analysis revealed significant changes in variables due to visual disturbances.
• Muscle groups vital for balance recovery showed strong associations with disturbances.
• Kinematic variables linked to loss of balance were identified.
• Visual disturbances alone were found to induce balance disruptions.

Conclusions:

• Visual disturbances in VE can independently cause balance disturbances.
• The developed VR tool is effective for assessing balance under challenging conditions.
• The generated dataset aids understanding of balance control and compensatory reactions.
• Findings have potential applications in clinical and rehabilitative settings.