Desktop VR Is Better Than Non-ambulatory HMD VR for Spatial Learning

Area of Science:

• Human-Computer Interaction
• Virtual Reality Technology
• Cognitive Psychology

Background:

• Virtual reality (VR) is increasingly used in research and training due to its controlled environments and customizable stimuli.
• Enhanced fidelity in VR does not always translate to improved human performance.
• Understanding the distinct roles of visual and interaction fidelity is crucial for optimizing VR usability.

Purpose of the Study:

• To investigate how different VR display modes (head-mounted display vs. desktop) affect spatial learning.
• To differentiate the impact of visual fidelity versus interaction fidelity on human performance in VR.
• To assess the usability of VR systems based on display mode and user experience.

Main Methods:

• An experiment comparing head-mounted display (HMD) and desktop (DT) VR modes with 40 participants.
• Spatial learning was assessed by having participants explore a virtual environment and create a sketch-map.
• HMD locomotion was restricted to isolate the effects of visual fidelity with reduced interaction fidelity.

Main Results:

• Participants reported less motion sickness and task effort with desktop VR compared to HMD VR.
• Despite high visual fidelity, HMD VR resulted in similar or poorer spatial learning performance than desktop VR.
• Desktop VR facilitated better recall of spatial components like junctions and cyclic order, while street segments and object associations were recalled equally well across modes.

Conclusions:

• The study highlights the differential impact of visual versus interaction fidelity on human performance in VR.
• Spatial learning effectiveness in VR is influenced by the type of cognitive and functional behaviors employed by users.
• Traditional desktop VR demonstrates higher usability, particularly when interaction fidelity is a key factor, offering valuable insights for designing effective VR-based human-computer interactions.