Using immersive virtual reality to remotely examine performance differences between dominant and non-dominant hands.

Area of Science:

• Rehabilitation Medicine
• Human-Computer Interaction
• Biomechanics

Background:

• Traditional upper-limb function assessments often require expensive and bulky robotics.
• Virtual reality (VR) presents a portable, cost-effective alternative with integrated motion capture capabilities.
• Validating VR tools with healthy individuals is crucial before clinical application.

Purpose of the Study:

• To investigate the feasibility of a remote, VR-based circle drawing task for assessing upper-limb motor function.
• To determine if VR can detect kinematic differences between dominant and non-dominant hand movements in healthy individuals.
• To establish preliminary evidence for VR's utility in evaluating patient populations.

Main Methods:

• Forty-seven healthy participants completed a circle drawing task using VR head-mounted displays and hand-held controllers.
• Participants remotely traced circles with both their dominant and non-dominant hands.
• Hand controller positions were continuously recorded to analyze movement kinematics.

Main Results:

• No significant differences were found in the size or roundness of circles drawn by either hand.
• Circles drawn with the dominant hand were completed significantly faster than those drawn with the non-dominant hand.
• The VR task successfully captured expected kinematic differences between dominant and non-dominant hand movements.

Conclusions:

• A VR-based circle drawing task is a feasible and potentially valuable tool for assessing upper-limb motor function.
• This method demonstrates the ability to detect subtle kinematic differences, supporting its use in clinical populations.
• VR offers a practical solution for remote and budget-conscious upper-limb motor function assessments.