Virtual reality as a tool to explore multisensory processing before and after engagement in physical activity

Area of Science:

• Gerontology
• Neuroscience
• Human-Computer Interaction

Background:

• Multisensory processing declines with age, impacting daily functioning in older adults.
• Physical activity is known to benefit cognitive function, but its role in VR environments for seniors is underexplored.

Purpose of the Study:

• To investigate the impact of virtual reality (VR)-based physical activity on multisensory processing in community-dwelling older adults.
• To compare the acute and chronic effects of VR physical activity against a reading-based control group.

Main Methods:

• A non-randomized pilot study involving 13 older adults in a VR physical activity group and 14 in a reading control group.
• Evaluation of multisensory processing using audiovisual response time (RT), simultaneity judgments (SJ), sound-induced flash illusion (SIFI), and temporal order judgments (TOJ).
• Intervention duration included both acute (single session) and chronic (6 weeks) exposure to VR physical activity.

Main Results:

• Acute VR physical activity significantly improved accuracy in the sound-induced flash illusion task compared to the control group (85.6% vs. 78.2%, p=0.037).
• Both chronic and acute VR physical activity led to significantly quicker response times (p<0.05).
• Covariate analyses indicated that age differences accounted for non-significant trends in the control group's response time improvements.

Conclusions:

• Immersive virtual reality offers potential benefits for enhancing multisensory processing in older adults.
• Future research should control for participant variables such as age and sex to ensure robust findings.
• VR-based physical activity may be a viable tool for cognitive intervention in geriatric populations.