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Fig. 6 | Journal of NeuroEngineering and Rehabilitation

Fig. 6

From: Electroencephalography-based endogenous brain–computer interface for online communication with a completely locked-in patient

Fig. 6

Results of the online experiment and test–retest reliability of the BCI system. a Results of the online experiment. RG was used as the classification algorithm. The number of electrodes was 19. The Y axis indicates the averaged online classification accuracies for each online run. The red horizontal dotted line indicates the level of chance. Note that the chance level is 70% when the number of trials is 20 and the confidence level is 99% [52] (b) Test–retest reliability of the BCI system. The Y axis indicates average classification accuracies for each training dataset

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