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

Figure 6

Proposed scheme for measurement of the EEG signal preservation by linear addition of an artefact-free EEG excerpt, , in the recorded scalp potential, . Both and were picked up from the same EEG channel at different times, and . The blocks labelled as gradient artefact correction match one specific gradient artefact correction approach (OMA or AAS).