Cz, and Pz). One can see the brain activity in the corrected Cz and Pz. Moreover, muscle artifacts in the referential F7 and T7 were reduced compared with that in the corrected F7 and T7. The reference signal is the same as that in Fig. 3(A). Considerable muscle artifacts can still be seen in bipolar F7–T7, illustrating that these artifacts are not from the reference signal.
