Gradient artefact correction in the EEG signal recorded within the fMRI scanner

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

3 Citations (Scopus)

Abstract

In recent years, combined EEG-fMRI has become a powerful brain imaging technique which is largely employed in clinical and neuroscience research. Parallel to the achievements reached in this area, a number of challenges remain to be overcome in order to consolidate such technique as an independent and effective method for brain imaging. In particular, the occurrence of gradient artefacts in the EEG signal due to the magnetic field of the fMRI magnetic scanner. This paper presents a proposal for modelling the variability of the gradient artefact template which makes use of the standard deviation and the slope differentiator between consecutive samples of the signals. Combination of such a model with the average artefact subtraction method achieves a reasonable elimination of the gradient artefact from EEG recordings.
Original languageEnglish
Title of host publicationProceedings of the 5th International Conference on Bio-inspired Systems and Signal Processing, BIOSIGNALS 2012, February 1-4, 2012, Vilamoura, Portugal
Place of PublicationVilamoura
PublisherINSTICC Press
Pages110-117
Publication statusPublished - 2012

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    Ferreira, J. L., Cluitmans, P. J. M., & Aarts, R. M. (2012). Gradient artefact correction in the EEG signal recorded within the fMRI scanner. In Proceedings of the 5th International Conference on Bio-inspired Systems and Signal Processing, BIOSIGNALS 2012, February 1-4, 2012, Vilamoura, Portugal (pp. 110-117). Vilamoura: INSTICC Press.