Artículo
Abstract:
The processing of information by the brain is reflected in dynamical changes of the electrical activity in time, frequency, and space. Therefore, the concomitant studies require methods capable of describing the quantitative variation of the signal in both time and frequency. Here we present a quantitative EEC (qEEG) analysis, based on the Orthogonal Discrete Wavelet Transform (ODWT), of generalized epileptic tonic-clonic EEG signals. Two quantifiers: the Relative Wavelet Energy (RWE) and the Normalized Total Wavelet Entmpy (NTWS) have been used. The RWE gives information about the relative energy associated with the different frequency bands present in the EEO and their corresponding degree of importance. The NTWS is a measure of the order/disorder degree in the EEG signal. These two quantifiers were computing in EEG signals as provided by scalp electrodes of epileptic patients. We showed that the epileptic recruitment rhythm observed for generalized epileptic tonic-clonic seizures is accurately described by the RWE quantifier. In addition, a significant decrease in the NTWS was observed in the recruitment epoch, indicating a more rhythmic and ordered behavior in the brain electrical activity.
Registro:
| Documento: | Artículo |
| Título: | Order/disorder in brain electrical activity |
| Autor: | Rosso, O.A.; Figliola, A. |
| Filiación: | Instituto de Cálculo, Fac. de Ciencias Exactas Y Naturales, Ciudad Universitaria, 1428 Ciudad de Buenos Aires, Argentina |
| Palabras clave: | EEG; Epileptic seizures; Signal entropy; Time-frequency signal analysis; Wavelet analysis |
| Año: | 2004 |
| Volumen: | 50 |
| Número: | 2 |
| Página de inicio: | 149 |
| Página de fin: | 155 |
| Título revista: | Revista Mexicana de Fisica |
| Título revista abreviado: | Rev. Mex. Fis. |
| ISSN: | 0035001X |
| PDF: | https://bibliotecadigital.exactas.uba.ar/download/paper/paper_0035001X_v50_n2_p149_Rosso.pdf |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0035001X_v50_n2_p149_Rosso |
Referencias:
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Citas:
---------- APA ----------
Rosso, O.A. & Figliola, A. (2004) . Order/disorder in brain electrical activity. Revista Mexicana de Fisica, 50(2), 149-155.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0035001X_v50_n2_p149_Rosso [ ]
---------- CHICAGO ----------
Rosso, O.A., Figliola, A. "Order/disorder in brain electrical activity" . Revista Mexicana de Fisica 50, no. 2 (2004) : 149-155.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0035001X_v50_n2_p149_Rosso [ ]
---------- MLA ----------
Rosso, O.A., Figliola, A. "Order/disorder in brain electrical activity" . Revista Mexicana de Fisica, vol. 50, no. 2, 2004, pp. 149-155.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0035001X_v50_n2_p149_Rosso [ ]
---------- VANCOUVER ----------
Rosso, O.A., Figliola, A. Order/disorder in brain electrical activity. Rev. Mex. Fis. 2004;50(2):149-155.Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0035001X_v50_n2_p149_Rosso [ ]
