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

Figure 2

Scheme of the optimised moving-average filtering (OMA): estimation of the corrected EEG () is carried out by recursive application of (10) in the scalp potential and successive , followed by subtraction of the components . The blocks labelled as OMA filter represent the forward-backward moving-average filtering, as described in (10).