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Single-trial event-related potential extraction through one-unit ICA-with-reference
Curtin University, Australia.
Curtin University, Australia.
Linköping University, Department of Medical and Health Sciences, Division of Community Medicine. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Anaesthetics, Operations and Specialty Surgery Center, Pain and Rehabilitation Center. Curtin University, Australia.
Curtin University, Australia.
2016 (English)In: Journal of Neural Engineering, ISSN 1741-2560, E-ISSN 1741-2552, Vol. 13, no 6, article id 066010Article in journal (Refereed) Published
Abstract [en]

Objective. In recent years, ICA has been one of the more popular methods for extracting event-related potential (ERP) at the single-trial level. It is a blind source separation technique that allows the extraction of an ERP without making strong assumptions on the temporal and spatial characteristics of an ERP. However, the problem with traditional ICA is that the extraction is not direct and is time-consuming due to the need for source selection processing. In this paper, the application of an one-unit ICA-with-Reference (ICA-R), a constrained ICA method, is proposed. Approach. In cases where the time-region of the desired ERP is known a priori, this time information is utilized to generate a reference signal, which is then used for guiding the one-unit ICA-R to extract the source signal of the desired ERP directly. Main results. Our results showed that, as compared to traditional ICA, ICA-R is a more effective method for analysing ERP because it avoids manual source selection and it requires less computation thus resulting in faster ERP extraction. Significance. In addition to that, since the method is automated, it reduces the risks of any subjective bias in the ERP analysis. It is also a potential tool for extracting the ERP in online application.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2016. Vol. 13, no 6, article id 066010
Keyword [en]
event-related potential; independent component analysis; one-unit ICA-R; P300; single-trial extraction; constrained independent component analysis
National Category
Biomedical Laboratory Science/Technology
Identifiers
URN: urn:nbn:se:liu:diva-132828DOI: 10.1088/1741-2560/13/6/066010ISI: 000386449300003PubMedID: 27739404OAI: oai:DiVA.org:liu-132828DiVA, id: diva2:1052472
Available from: 2016-12-06 Created: 2016-11-30 Last updated: 2017-11-29

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  • apa
  • harvard1
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  • modern-language-association-8th-edition
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  • de-DE
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