Motor Imagery Classification Using Mu and Beta Rhythms of EEG with Strong Uncorrelating Transform Based Complex Common Spatial Patterns

Figure 7

Spatial patterns of the worst three subjects in descending order, who gave the worst classification rates: subject 2 (68.18%), 103 (68.04%), and 33 (65.47%). The left two topographies show the spatial patterns for the covariance matrices () of the left- and right-hand tasks, respectively, while the right two topographies show the spatial patterns for the pseudocovariance matrices (). Note that the patterns of the left- and right-hand motor imagery are prominently different even for the subjects who had poor classification rates.

(a) Subject 34

(b) Subject 72

(c) Subject 7