A novel reaction time assessment in virtual reality: Advantages over computerized tests

Area of Science:

• Cognitive Neuroscience
• Human-Computer Interaction
• Virtual Reality Applications

Background:

• Reaction time (RT) is crucial for daily activities and sports.
• Virtual reality (VR) is increasingly used for cognitive assessments, but its validity for RT is unclear.

Purpose of the Study:

• To develop and validate a novel RT test in VR.
• To explore VR's unique contributions to RT assessment.

Main Methods:

• Forty-eight participants completed both a computerized RT test (COM-RT) and a novel VR-RT test.
• The VR-RT test included simple, choice, and complex tasks (reaching for static/moving stimuli).
• Correlations and differences between COM-RT and VR-RT were analyzed.

Main Results:

• Moderate-to-strong correlations found between VR-RT and COM-RT for simple and choice RTs.
• Significantly longer RTs were observed in VR-RT compared to COM-RT.
• Complex VR tasks (reaching, unexpected stimuli) showed longer RTs; moving stimuli yielded shorter RTs.
• Movement velocity was higher for dynamic stimuli in VR.

Conclusions:

• VR is a valid tool for RT measurement, but VR-specific outcomes should be interpreted cautiously.
• VR enables novel assessments using lifelike stimuli and kinematic measurements.
• The VR-RT test expands cognitive assessment beyond traditional computerized methods.