“…The majority of the papers we reviewed obtained the control signal directly from the output of the BCI classifier [ 2 , 28 , 31 , 33 , 37 , 43 , 46 , 48 , 50 , 56 , 59 , 60 , 61 , 63 , 66 , 72 ]. For asynchronous systems, this generally involved windowing the EEG data and obtaining a classification output at a regular rate [ 2 , 28 , 33 , 37 , 43 , 46 , 48 , 50 , 56 , 59 , 60 , 61 , 63 , 66 , 71 , 72 ]. This classification output was used to drive the external device.…”