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Updated: Sep 17, 2025
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Virtual Reality Experiments with Physiological Measures
Published on: August 29, 2018
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Response Inhibition and Working Memory in Virtual Reality: Behavioral and Event-Related Potential Effects of Stress
Leandro M Ledesma1, Matthew T Hyland1, Lisa K Chinn1
1Department of Psychology, University of Houston, Houston, TX 77204, United States.
Military Medicine
|June 27, 2025
Summary
Military stress impacts cognitive function differently. Sleep deprivation impairs response inhibition, while intense exercise boosts working memory, especially in women, offering insights for training readiness.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Military Science
Background:
- Military personnel face significant stressors like intense physical exertion and sleep deprivation.
- Understanding stress effects on cognition and brain activity is crucial for military training and job placement.
- This study investigated cognitive performance and neurophysiological responses in military trainees under stress.
Purpose of the Study:
- To examine the distinct effects of acute intense physical exercise and sleep deprivation on cognitive functions.
- To analyze neurophysiological responses, specifically P300 event-related potentials, associated with cognitive performance under stress.
- To provide insights for optimizing military training and operational readiness in high-stress environments.
Main Methods:
- Participants (n=24) completed response inhibition (Go/No-Go) and working memory (2-Back) tasks in VR.
- Cognitive performance and electroencephalography (EEG) were recorded at baseline, after intense exercise, and during sleep deprivation.
- Virtual reality tasks assessed inhibitory control and working memory under controlled stress conditions.
Main Results:
- Sleep deprivation impaired inhibitory control (Go/No-Go task) but not working memory (2-Back task).
- Intense exercise reduced accuracy on Go trials but enhanced 2-Back performance in women, with faster reaction times.
- P300 amplitudes decreased with sleep deprivation (Go/No-Go) and post-exercise (2-Back), indicating altered attentional processing and neural efficiency.
Conclusions:
- Acute exercise and sleep deprivation have differential impacts on cognitive performance and brain activity.
- Sleep deprivation specifically hinders response inhibition, while exercise can enhance working memory, particularly in women.
- Findings suggest distinct neural mechanisms underlying cognitive changes under different stressors, informing military readiness strategies.
