Comparing the Performance of Popular MEGEEG Artifact Correction Methods in an Evoked-Response Study
Joint Authors
Parkkonen, Lauri
Haumann, Niels Trusbak
Kliuchko, Marina
Brattico, Elvira
Vuust, Peter
Source
Computational Intelligence and Neuroscience
Issue
Vol. 2016, Issue 2016 (31 Dec. 2015), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-07-21
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
We here compared results achieved by applying popular methods for reducing artifacts in magnetoencephalography (MEG) and electroencephalography (EEG) recordings of the auditory evoked Mismatch Negativity (MMN) responses in healthy adult subjects.
We compared the Signal Space Separation (SSS) and temporal SSS (tSSS) methods for reducing noise from external and nearby sources.
Our results showed that tSSS reduces the interference level more reliably than plain SSS, particularly for MEG gradiometers, also for healthy subjects not wearing strongly interfering magnetic material.
Therefore, tSSS is recommended over SSS.
Furthermore, we found that better artifact correction is achieved by applying Independent Component Analysis (ICA) in comparison to Signal Space Projection (SSP).
Although SSP reduces the baseline noise level more than ICA, SSP also significantly reduces the signal—slightly more than it reduces the artifacts interfering with the signal.
However, ICA also adds noise, or correction errors, to the waveform when the signal-to-noise ratio (SNR) in the original data is relatively low—in particular to EEG and to MEG magnetometer data.
In conclusion, ICA is recommended over SSP, but one should be careful when applying ICA to reduce artifacts on neurophysiological data with relatively low SNR.
American Psychological Association (APA)
Haumann, Niels Trusbak& Parkkonen, Lauri& Kliuchko, Marina& Vuust, Peter& Brattico, Elvira. 2016. Comparing the Performance of Popular MEGEEG Artifact Correction Methods in an Evoked-Response Study. Computational Intelligence and Neuroscience،Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1099755
Modern Language Association (MLA)
Haumann, Niels Trusbak…[et al.]. Comparing the Performance of Popular MEGEEG Artifact Correction Methods in an Evoked-Response Study. Computational Intelligence and Neuroscience Vol. 2016, no. 2016 (2015), pp.1-10.
https://search.emarefa.net/detail/BIM-1099755
American Medical Association (AMA)
Haumann, Niels Trusbak& Parkkonen, Lauri& Kliuchko, Marina& Vuust, Peter& Brattico, Elvira. Comparing the Performance of Popular MEGEEG Artifact Correction Methods in an Evoked-Response Study. Computational Intelligence and Neuroscience. 2016. Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1099755
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1099755