Gradient Artefact Correction and Evaluation of the EEG Recorded Simultaneously with fMRI Data Using Optimised Moving-Average

Figure 1

Scalp potential excerpt recorded during continuous acquisition of fMRI data. Assuming that the artefact waveform is stationary, any moving-average window of length (= TR-slice) along the signal contains the artefact waveform corresponding to one slice, but with onset other than of those samples localised in the signal peaks.