Accuracy and stability in non-immersive VR: How display type and body position influence motor performance

Area of Science:

• Human-Computer Interaction
• Motor Control
• Virtual Reality

Background:

• Virtual and augmented reality technologies are transforming human interaction with environments across diverse fields.
• The influence of display type and body posture on motor performance, particularly bimanual coordination, is not well understood.

Purpose of the Study:

• To investigate how display type (VR goggles vs. projected screen) and body position (upright vs. recumbent) affect bimanual coordination.
• To determine the impact of environmental constraints on motor performance in different immersive display conditions.

Main Methods:

• Twelve right-limb dominant participants performed a continuous 1:1 bimanual force coordination task with visual feedback (Lissajous plots).
• Performance was compared between virtual reality (VR) goggles and a projected screen, in both upright and recumbent body positions using a tilt table.

Main Results:

• VR goggles minimized performance variations between upright and recumbent positions, indicating stabilized motor coordination.
• Projection screens showed increased force coherence in the 8-12 Hz band and lower absolute error in the recumbent position compared to upright.
• VR goggles appear to enhance motor consistency by reducing perceptual distractions, while projection screens may improve synchronization and accuracy under specific postural conditions.

Conclusions:

• VR goggles offer motor stability and adaptability across different body positions, beneficial for tasks requiring consistent performance.
• Projection screens may provide enhanced motor synchronization and precision in controlled settings due to simplified visual processing.
• Task-specific design considerations for display environments are crucial for optimizing training, rehabilitation, and motor coordination tasks.