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Reduction of cognitive fatigue and improved performance at a VR-based driving simulator using tRNS
Alberto Benelli1,2, Cristina Memoli1, Francesco Neri1,3
1Siena Brain Investigation & Neuromodulation Lab (Si-BIN Lab), Unit of Neurology and Clinical Neurophysiology, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy.
Iscience
|September 24, 2024
Summary
Transcranial random noise stimulation (tRNS) effectively reduced cognitive fatigue and improved driving performance in a virtual reality simulation. This non-invasive brain stimulation shows promise for enhancing safety in complex tasks.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Human Factors Engineering
Background:
- Cognitive fatigue (CF) significantly impairs performance and increases accident risk during demanding activities like driving.
- Current interventions for CF are limited, necessitating novel approaches to mitigate its effects.
Purpose of the Study:
- To investigate the efficacy of transcranial random noise stimulation (tRNS) in reducing cognitive fatigue.
- To assess the impact of tRNS on driving performance during a simulated complex task.
Main Methods:
- A double-blind, sham-controlled study involving 30 participants performing a virtual reality truck driving task.
- Real or sham tRNS was applied bilaterally to the 'anti-fatigue network' during the initial 30-minute driving session.
- Driving performance and physiological arousal (heart rate variability) were continuously monitored across two sessions to evaluate online and offline stimulation effects.
Main Results:
- Participants receiving real tRNS demonstrated significantly improved driving performance in the second, non-stimulated driving session.
- Real tRNS led to a significant reduction in perceived cognitive fatigue.
- Heart rate variability analysis indicated potential modulation of arousal levels, though not explicitly stated as a primary outcome.
Conclusions:
- Transcranial random noise stimulation is a viable method for mitigating cognitive fatigue and enhancing performance in complex tasks like driving.
- The findings suggest potential therapeutic applications of tRNS for neurological conditions characterized by fatigue.
