Correlation-based alignment of multichannel signals and application to paroxysmal events

Author

Kalitzin, Stiliyan ; Zbijewski, Wojciech ; Parra, Jaime ; Velis, Demetrios ; Manshanden, Ilonka ; da Silva, Fernando Lopes

Author_Institution

Dutch Epilepsy Clinics Found., Heemstede, Netherlands

Volume

49

Issue

9

fYear

2002

Firstpage

1068

Lastpage

1070

Abstract

We propose a new group-theoretical approach to the problem of alignment of time events in multichannel signal recordings. Such an alignment is an essential phase in the classification of transients in electroencephalogram/magnetoencephalogram (MEG) signals. A common reference frame is reconstructed applying a time translation transformation based on delayed mutual correlation functions of the individual events. The method is applied to MEG data sets recorded from epileptic patients showing paroxysmal interictal discharges.

Keywords

diseases; electroencephalography; magnetoencephalography; medical signal processing; MEG data sets; common reference frame reconstruction; correlation-based alignment; delayed mutual correlation functions; epileptic patients; multichannel signals; paroxysmal events; paroxysmal interictal discharges; transients classification; Decision making; Delay effects; Distortion; Electroencephalography; Epilepsy; Interference; Physics; Signal resolution; Algorithms; Child; Electroencephalography; Epilepsy, Generalized; Female; Humans; Magnetoencephalography; Models, Neurological; Models, Statistical; Reproducibility of Results; Sensitivity and Specificity; Time Factors;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/TBME.2002.802060

Filename

1028432