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Contrasting spatial, temporal and spatio-temporal ICA applied to ictal EEG recordings
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James, C. J. and Davies, M. E. (2008) Contrasting spatial, temporal and spatio-temporal ICA applied to ictal EEG recordings. In: Annual Conference of the IEEE Engineering in Medicine and Biology Society 2008, Vancouver, Canada, Aug 20-25, 2008. Published in: Proceedings of the Annual Conference of the IEEE Engineering in Medicine and Biology Society 2008 pp. 3336-3339. doi:10.1109/IEMBS.2008.4649919 ISSN 1557-170X, ISBN:978-1-4244-1814-5.
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Official URL: http://dx.doi.org/10.1109/IEMBS.2008.4649919
Abstract
In this paper we contrast three implementations of Independent Component Analysis (ICA) as applied to epileptic scalp electroencephalographic (EEG) recordings, these are; Spatial (Ensemble) ICA, Temporal (single-channel) ICA and Spatio-Temporal ICA. These techniques are based on information derived from both multi-channel as well as single channel biomedical signal recordings. We assess the suitability of the three techniques in isolating and extracting out epileptic seizure sources. Although our results are preliminary in nature, we show that standard implementations of ICA (ensemble ICA) are lacking when attempting to extract complex underlying activity such as ictal activity in the EEG. Temporal ICA performs well in separating underlying sources, although it is clearly lacking in spatial information. Spatio-Temporal ICA has the advantage of using temporal information to inform the ICA process, aided by the spatial information inherent in multi-channel recordings. This work is being expanded for seizure onset analysis through scalp EEG.
Item Type: | Conference Item (Paper) | ||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | Proceedings of the Annual Conference of the IEEE Engineering in Medicine and Biology Society 2008 | ||||
Publisher: | Institute of Electrical and Electronics Engineers | ||||
ISSN: | 1557-170X, ISBN:978-1-4244-1814-5 | ||||
Book Title: | 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society | ||||
Official Date: | 2008 | ||||
Dates: |
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Page Range: | pp. 3336-3339 | ||||
DOI: | 10.1109/IEMBS.2008.4649919 | ||||
Status: | Not Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | Scottish Funding Council (SFC) | ||||
Conference Paper Type: | Paper | ||||
Title of Event: | Annual Conference of the IEEE Engineering in Medicine and Biology Society 2008 | ||||
Type of Event: | Conference | ||||
Location of Event: | Vancouver, Canada | ||||
Date(s) of Event: | Aug 20-25, 2008 |
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