BALLISTOCARDIOGRAPHIC ARTIFACT REMOVAL FROM SIMULTANEOUS EEG/FMRI RECORDING BY MEANS OF CANONICAL CORRELATION ANALYSIS

S. Assecondi, P. Van Hese, H. Hallez, Y. D’Asseler, I. Lemahieu, A. M. Bianchi, P. Boon

2008

Abstract

The electroencephalogram (EEG) is a standard technique to record and study the brain activity with a high temporal resolution. Blood oxygenation level dependent functional magnetic resonance imaging (BOLD fMRI) is a non-invasive imaging method that allows the localization of activated brain regions with a high spatial resolution. The co-recording of these two complementary modalities can give new insights into how the brain functions. However, the interaction between the strong electromagnetic field (3T) of the MR scanner and the currents recorded by the electrodes placed on the scalp generates artifacts that obscure the EEG and diminish its readability. In this work we used canonical correlation analysis (CCA) in order to remove the ballistocardiographic artifact (BCGa). CCA is applied to two consecutive windows in order to take into account both spatial and temporal information. We showed that users can easily remove the artifact through a graphical user interface by adjusting the number of components to be removed according to visual inspection of the signal, its power spectrum, the cumulative explained variance and the correlation coefficients.

Paper Citation

in Harvard Style

Assecondi S., Van Hese P., Hallez H., D’Asseler Y., Lemahieu I., M. Bianchi A. and Boon P. (2008). BALLISTOCARDIOGRAPHIC ARTIFACT REMOVAL FROM SIMULTANEOUS EEG/FMRI RECORDING BY MEANS OF CANONICAL CORRELATION ANALYSIS . In Proceedings of the First International Conference on Bio-inspired Systems and Signal Processing - Volume 2: BIOSIGNALS, (BIOSTEC 2008) ISBN 978-989-8111-18-0, pages 11-16. DOI: 10.5220/0001061200110016

in Bibtex Style

@conference{biosignals08,
author={S. Assecondi and P. Van Hese and H. Hallez and Y. D’Asseler and I. Lemahieu and A. M. Bianchi and P. Boon},
title={BALLISTOCARDIOGRAPHIC ARTIFACT REMOVAL FROM SIMULTANEOUS EEG/FMRI RECORDING BY MEANS OF CANONICAL CORRELATION ANALYSIS},
booktitle={Proceedings of the First International Conference on Bio-inspired Systems and Signal Processing - Volume 2: BIOSIGNALS, (BIOSTEC 2008)},
year={2008},
pages={11-16},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001061200110016},
isbn={978-989-8111-18-0},
}

in EndNote Style

TY - CONF
JO - Proceedings of the First International Conference on Bio-inspired Systems and Signal Processing - Volume 2: BIOSIGNALS, (BIOSTEC 2008)
TI - BALLISTOCARDIOGRAPHIC ARTIFACT REMOVAL FROM SIMULTANEOUS EEG/FMRI RECORDING BY MEANS OF CANONICAL CORRELATION ANALYSIS
SN - 978-989-8111-18-0
AU - Assecondi S.
AU - Van Hese P.
AU - Hallez H.
AU - D’Asseler Y.
AU - Lemahieu I.
AU - M. Bianchi A.
AU - Boon P.
PY - 2008
SP - 11
EP - 16
DO - 10.5220/0001061200110016