Figure 4.

Comparison of classification and estimation performances among the consumer EEG device (denoted as “Consumer”), emotion-specialized device (denoted as “Emotion”), attention-specialized device (denoted as “Attention”), and general purpose device (denoted as “Generalized”), with different numbers of electrodes. The error bars indicate the standard errors across participants. (a) Classification accuracy calculated using the emotion dataset and (b) absolute correlation coefficient calculated using the attention dataset.