“…This was not surprising, since CSP features, which can be used to extract spatial features from EEG time series, have a long history as robust features in MI EEG classification [ 78 ], and 80% of the reviewed studies used an MI-based paradigm. Many studies used traditional CSP features [ 29 , 37 , 43 , 44 , 51 , 53 , 54 , 55 , 63 , 66 ], which were established for MI EEG classification [ 78 ]. However, filter bank CSP features, which have been shown to perform better than traditional CSP features [ 79 ], were also common [ 35 , 46 , 47 ].…”