Quadratic time-frequency distribution selection for seizure detection in the newborn

Stevenson, N., Mesbah, M. and Boashash B. (2008). Quadratic time-frequency distribution selection for seizure detection in the newborn. In: Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE. 30th Annual Conference of the Engineering in Medicine and Biology Society, Vancouver, Canada, (923-926). 20-25 August 2008. doi:10.1109/IEMBS.2008.4649305


Author Stevenson, N.
Mesbah, M.
Boashash B.
Title of paper Quadratic time-frequency distribution selection for seizure detection in the newborn
Conference name 30th Annual Conference of the Engineering in Medicine and Biology Society
Conference location Vancouver, Canada
Conference dates 20-25 August 2008
Proceedings title Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE   Check publisher's open access policy
Journal name 2008 30th Annual International Conference of the Ieee Engineering in Medicine and Biology Society, Vols 1-8   Check publisher's open access policy
Place of Publication New York, USA
Publisher IEEE
Publication Year 2008
Sub-type Fully published paper
DOI 10.1109/IEMBS.2008.4649305
ISBN 9781424418145
ISSN 1557-170X
Start page 923
End page 926
Total pages 4
Language eng
Abstract/Summary Several, recently proposed, newborn EEG seizure detection techniques use quadratic time-frequency distributions (QTFDs) to generate the time-frequency representations (TFRs) at their core. The specific type of QTFD that provides the best discrimination between the TFR of nonseizure and seizure epochs of EEG, however, has yet to be thoroughly investigated. This paper proposes the selection of an optimal QTFD that maximises the the absolute error between seizure and nonseizure QTFDs calculated on a database of newborn EEG. The optimisation procedure is a data driven process that selects the optimal QTFD based on the distribution of the absolute error between nonseizure/nonseizure QTFDs and the seizure/nonseizure QTFDs. Several non-adaptive QTFDs were selected for comparison and those selected were subjected to a restriction on the kernel's volume to ensure that the QTFD can accurately represent the time-frequency distribution of signal energy. The results show that a lag independent or narrowband QTFD such as the modified B distribution provides a QTFD that best highlights the difference in time-frequency signal energy between newborn EEG seizure and nonseizure.
Subjects 1103 Clinical Sciences
1114 Paediatrics and Reproductive Medicine
Keyword Quadratic time-frequency distributions (QTFDs)
Seizure detection
Newborn
EEG
Q-Index Code E1
Q-Index Status Provisional Code

 
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Created: Wed, 17 Feb 2010, 19:17:44 EST by Michael Affleck on behalf of UQ Centre for Clinical Research