Cited by 97EEG and Brain-Computer InterfacesAdvanced MRI Techniques and ApplicationsBlind Source Separation Techniques

Statistical feature extraction for artifact removal from concurrent fMRI-EEG recordings

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Liu, Zhongming, de Zwart, Jacco A., van Gelderen, Peter, Kuo, Li-Wei, Duyn, Jeff H.·2012·NeuroImage

Abstract

We propose a set of algorithms for sequentially removing artifacts related to MRI gradient switching and cardiac pulsations from electroencephalography (EEG) data recorded during functional magnetic resonance imaging (fMRI). Special emphasis is directed upon the use of statistical metrics and methods for the extraction and selection of features that characterize gradient and pulse artifacts. To remove gradient artifacts, we use channel-wise filtering based on singular value decomposition (SVD). To remove pulse artifacts, we first decompose data into temporally independent components and then select a compact cluster of components that possess sustained high mutual information with the electrocardiogram (ECG). After the removal of these components, the time courses of remaining components are filtered by SVD to remove the temporal patterns phase-locked to the cardiac timing markers derived from the ECG. The filtered component time courses are then inversely transformed into multi-channel EEG time series free of pulse artifacts. Evaluation based on a large set of simultaneous EEG-fMRI data obtained during a variety of behavioral tasks, sensory stimulations and resting conditions showed excellent data quality and robust performance attainable with the proposed methods. These algorithms have been implemented as a Matlab-based toolbox made freely available for public access and research use.

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Crossref · 10.1016/j.neuroimage.2011.10.042

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Authors
Liu, Z., de Zwart, J. A., van Gelderen, P., Kuo, L.-W., & Duyn, J. H.
Affiliations
National Institutes of Health (US)
Corresponding author
Liu, Zhongming
Venue
NeuroImage
Publisher
Elsevier BV
Published
2012-02
Volume
59
Issue
3
Pages
2073-2087
ISSN
1053-8119 (ISSN-L)
OpenAlex
W2115261698
Cited by
97
References
46
Citations by year
2026: 4 · 2025: 11 · 2024: 4 · 2023: 6 · 2022: 4 · 2021: 5 · 2020: 8 · 2019: 6 · 2018: 11 · 2017: 5 · 2016: 11 · 2015: 10 · 2014: 7 · 2013: 3 · 2012: 2
FWCI
1.95
Type
journal article
Language
en
Open access
Locations
  • NeuroImage (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
Intramural Research Program of the National Institute of Neurological Disorders and Stroke, National Institutes of Health
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › EEG and Brain-Computer Interfaces
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Physical Sciences › Computer Science › Signal Processing › Blind Source Separation Techniques
Keywords
artifact removal, EEG-fMRI, singular value decomposition, independent component analysis, mutual information, electrocardiogram, feature extraction
MeSH terms
Adult, Algorithms, Alpha Rhythm, Data Interpretation, Statistical, Electrocardiography, Electroencephalography, Evoked Potentials, Visual, Female, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Oxygen, Pattern Recognition, Automated, Photic Stimulation, Artifacts, Phantoms, Imaging, Principal Component Analysis, Young Adult

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