When mental fatigue maybe characterized by Event Related Potential (P300) during virtual wheelchair navigation

Hachem A. Lamti, Philippe Gorce, Mohamed Moncef Ben Khelifa and Adel M. Alimi

Computer Methods in Biomechanics and Biomedical Engineering, 2016, vol. 19, issue 16, 1749-1759

Abstract: The goal of this study is to investigate the influence of mental fatigue on the event related potential P300 features (maximum pick, minimum amplitude, latency and period) during virtual wheelchair navigation. For this purpose, an experimental environment was set up based on customizable environmental parameters (luminosity, number of obstacles and obstacles velocities). A correlation study between P300 and fatigue ratings was conducted. Finally, the best correlated features supplied three classification algorithms which are MLP (Multi Layer Perceptron), Linear Discriminate Analysis and Support Vector Machine. The results showed that the maximum feature over visual and temporal regions as well as period feature over frontal, fronto-central and visual regions were correlated with mental fatigue levels. In the other hand, minimum amplitude and latency features didn’t show any correlation. Among classification techniques, MLP showed the best performance although the differences between classification techniques are minimal. Those findings can help us in order to design suitable mental fatigue based wheelchair control.

Date: 2016
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DOI: 10.1080/10255842.2016.1183198

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