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.
['Stiliyan Kalitzin', 'W. Zbijewski', 'Jaime Parra', 'D.N. Velis', 'L. Manshanden', 'F.H. Lopes da Silva']
Correlation-based alignment of multichannel signals and application to paroxysmal events