Comparing physiological responses during cognitive tests in virtual environments vs. in identical real-world...

Area of Science:

• Human-computer interaction
• Cognitive science
• Virtual reality research

Background:

• Virtual environments (VEs) offer controlled settings for design evaluation.
• Generalizability of human responses from VEs to real-world contexts is crucial but under-researched.
• Limited studies compare identical real and virtual environments for response consistency.

Purpose of the Study:

• To evaluate the consistency of human responses between identical real-world and virtual reality (VR) environments.
• To compare cognitive performance and physiological data in real versus virtual classroom settings.
• To assess the validity of VEs for design testing and human response measurement.

Main Methods:

• A real-world classroom was precisely replicated in a virtual environment using rendering tools.
• Participants completed cognitive tests in both the real and virtual classrooms.
• Physiological data, including EEG, ECG, EOG, GSR, and head acceleration, were collected.

Main Results:

• Cognitive test accuracy was similar, but response speed was faster in the VE.
• No significant differences in eye blink rate or heart rate were observed.
• Head acceleration and galvanic skin response (GSR) variance were lower in the VE.
• Electroencephalography (EEG) frequency band-power and event-related potentials showed strong similarity, with one exception in executive functioning.

Conclusions:

• VEs can provide comparable cognitive and physiological response data to real-world settings.
• The study supports the generalizability of human responses measured in VEs for design evaluation.
• VEs demonstrate potential as a valid tool for research, though subtle differences in executive functioning warrant further investigation.