Figure 3
From: Adaptive optimal basis set for BCG artifact removal in simultaneous EEG-fMRI
Qualitative comparison between the EEG recordings before (Orig) and after BCG artifact correction (AAS, ICA, OBS, aOBS) in a representative subject (S1). (a) Illustrative example of 10 s signal from a single EEG channel (channel F8). Following the application of BCG removal methods, the amplitude of the EEG signal strongly decreases, as the BCG artifact contribution is attenuated. (b) EEG signals from all recording channels were epoched in time-windows of 600 ms by using as triggers the cardiac events detected from the ECG signal. By displaying the cardiac evoked activity, it is possible to observe the overall cardiac contribution to the EEG data.
