Fig. 2From: Selection of the optimal channel configuration for implementing wearable EEG devices for the diagnosis of mild cognitive impairmenta Proposed optimal electrode configurations consisting of two, four, six, and eight channels (from top to bottom). b Performance comparison between the proposed optimal electrode configurations and the electrode configurations of commercial wearable EEG devices. The x-axis of the bar graphs represents the electrode configurations. The error bars indicate standard error. * Bonferroni-corrected p < 0.05, ** Bonferroni-corrected p < 0.001, *** Bonferroni-corrected p < 0.0001Back to article page