Figure 6

The comparison of SSAEFs extracted by our CEEMD-based approach and conventional filtering method in subject I. a One example of one-second SSAEF waveforms obtained from the two methods. b The Fourier spectra of a. c The spatial map and current sources of CEEMD processed SSAEF estimated at 218 ms in a. d The spatial map and current sources of SSAEF processed by 35–39 Hz bandpass filtering at 218 ms in a.