EEG characteristic analysis of coach bus drivers based on brain connectivity as revealed via a graph theoretical network

Figures

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  Fig. 1. Real driving in highway. EEG signals were collected by portable EEG acquisition equipment Emotiv. Drivers drove along the highway from Shenyang to Dandong, China. And the route was obtained through Google maps.

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  Fig. 2. Relative position of the electrode, (a) electrode division of Emotiv, (b) electrode coordinates in a two-dimensional coordinate system.

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  Fig. 3. Steps of brain network construction, (a) EEG data, (b) adjacent matrix, (c) brain network.

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  Fig. 4. Correlation coefficient (mean of all subjects) between all electrodes at all stages.

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  Fig. 5. The networks of subjects at all stages (1–9).

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  Fig. 6. Variation tendency of the cluster coefficient (C) and the global efficiency (G) at 9 driving stages, (a) cluster coefficient of the brain networks, (b) global efficiency of the brain networks.

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  Fig. 7. The ratio (β/θ) of the relative power spectrum.

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  Fig. 8. Scores (mean ± s.d.) of the subjective questionnaire for the 9 stages of driving.