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Abstract:

The analysis of generalized tonic-clonic seizures is usually difficult with quantitative EEG techniques due to muscle artifact. We applied two quantifiers based on the Wavelet Transform to evaluate 20 seizures from eight consecutive patients admitted for video-EEG monitoring. We studied the relative wavelet energy and the wavelet entropy over time. In 16/20 events we found significant decremental activity in the relative wavelet energy associated with frequency band 0.8-3.2 Hz (delta activity) at the seizure onset, indicating that the seizure is dominated by medium frequency bands 3.2-12.8 Hz (theta and alpha bands). In 19/20 events the mean wavelet entropy presents lower values during the ictal period compared to the pre-ictal period, indicating that the associated dynamic is more ordered and simple. Thus the employed tools show good accuracy for detecting changes in the system dynamic. We conclude that this behavior could be induced by frequency tuning in the neuronal activity triggered by an hypothetic epileptic focus. © 2003 Elsevier Science B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Wavelet analysis of generalized tonic-clonic epileptic seizures
Autor:Rosso, O.A.; Blanco, S.; Rabinowicz, A.
Filiación:Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Ciudad de Buenos Aires, Argentina
Departament of Neurology, Inst. de Invest. Neurol. Raul Carrea, FLENI, Montañeses 2325, 1429 Ciudad de Buenos Aires, Argentina
Palabras clave:EEG; Epileptic seizures; Signal entropy; Wavelet; Electroencephalography; Entropy; Neurology; Wavelet transforms; Epileptic seizures; Signal processing
Año:2003
Volumen:83
Número:6
Página de inicio:1275
Página de fin:1289
DOI: http://dx.doi.org/10.1016/S0165-1684(03)00054-9
Título revista:Signal Processing
Título revista abreviado:Signal Process
ISSN:01651684
CODEN:SPROD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01651684_v83_n6_p1275_Rosso

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Citas:

---------- APA ----------
Rosso, O.A., Blanco, S. & Rabinowicz, A. (2003) . Wavelet analysis of generalized tonic-clonic epileptic seizures. Signal Processing, 83(6), 1275-1289.
http://dx.doi.org/10.1016/S0165-1684(03)00054-9
---------- CHICAGO ----------
Rosso, O.A., Blanco, S., Rabinowicz, A. "Wavelet analysis of generalized tonic-clonic epileptic seizures" . Signal Processing 83, no. 6 (2003) : 1275-1289.
http://dx.doi.org/10.1016/S0165-1684(03)00054-9
---------- MLA ----------
Rosso, O.A., Blanco, S., Rabinowicz, A. "Wavelet analysis of generalized tonic-clonic epileptic seizures" . Signal Processing, vol. 83, no. 6, 2003, pp. 1275-1289.
http://dx.doi.org/10.1016/S0165-1684(03)00054-9
---------- VANCOUVER ----------
Rosso, O.A., Blanco, S., Rabinowicz, A. Wavelet analysis of generalized tonic-clonic epileptic seizures. Signal Process. 2003;83(6):1275-1289.
http://dx.doi.org/10.1016/S0165-1684(03)00054-9