Conferencia
Abstract:
Localization of the epileptogenic zone is an important issue in epileptology, even though there is not a unique definition of the epileptic focus. The objective of the present study is to test ultrametric analysis to uncover cortical interactions in human epileptic data. Correlation analysis has been carried out over intraoperative Electro-Corticography (ECoG) data in 2 patients suffering from temporal lobe epilepsy (TLE). Recordings were obtained using a grid of 20 electrodes (5×4) covering the lateral temporal lobe and a strip of either 4 or 8 electrodes at the mesial temporal lobe. Ultrametric analysis was performed in the averaged final correlation matrices. By using the matrix of linear correlation coefficients and the appropriate metric distance between pairs of electrodes time series, we were able to construct Minimum Spanning Trees (MST). The topological connectivity displayed by these trees gives useful and valuable information regarding physiological and pathological information in the temporal lobe of epileptic patients. © 2007 American Institute of Physics.
Registro:
| Documento: | Conferencia |
| Título: | Global interactions analysis of epileptic ECoG data |
| Autor: | Ortega, G.J.; Sola, R.G.; Pastor, J. |
| Ciudad: | Mar del Plata |
| Filiación: | Neurosurgery Service, Hospital Universitario de la Princesa, Madrid, Spain FCEyN, University of Buenos Aires, Argentina Neurophysiology Service, Hospital Universitario de la Princesa, Madrid, Spain |
| Palabras clave: | Multivariate; Time series analysis; Ultrametricity |
| Año: | 2007 |
| Volumen: | 913 |
| Página de inicio: | 203 |
| Página de fin: | 208 |
| DOI: | http://dx.doi.org/10.1063/1.2746748 |
| Título revista: | 15th Conference on Nonequilibrium Statistical Mechanics and Nonlinear Physics |
| Título revista abreviado: | AIP Conf. Proc. |
| ISSN: | 0094243X |
| PDF: | https://bibliotecadigital.exactas.uba.ar/download/paper/paper_0094243X_v913_n_p203_Ortega.pdf |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v913_n_p203_Ortega |
Referencias:
- Lüders, H.O., (1992) Epilepsy Surgery, , 1rst Edition, Raven Press, New York
- Engel Jr., J.J., Van Ness, P.C., Rasmussen, T.B., Outcome with respect to epileptic seizures (1993) Surgical treatment of the epilepsies, , Raven Press, New York
- Rosenow, F., Lders, H.O., (2001) Brain, 124, pp. 1683-1700
- Pastor, J., (2006) Clin Neurophysiololy, 117 (12), pp. 2604-2614
- Ramal, R., (1986) Review of Modern Physics, 58 (3), pp. 765-788
- Press, W.H., (1992) Numerical Recipes, , 2nd edit. Cambridge University Press, Cambridge
- Gower, J.C., (1996) Biometrika, 53, p. 325
- Papadimitriou, C.H., Steiglitz, K., (1982) Combinatorial Optimization, , Prentice-Hall, Englewood Cliffs
- Murtagh, F., (2005) Eur. Phys. J. B, 43, pp. 573-579
- Watts, D.J., Strogatz, S.H., (1998) Nature, 393, pp. 440-442A4 - Nat. Council of Scientific and Tech. Invest. (CONICET), Argentina; Nat. Agency of Sci. and Technol. Promotion (ANPCyT), Argentina; Latin American Center of Physics (CLAF); Air Force Office of Scientific Research (AFOSR), USA; Nat. Sci. Found. Office of Int. Science and Eng. (OISE), USA
Citas:
---------- APA ----------
Ortega, G.J., Sola, R.G. & Pastor, J. (2007) . Global interactions analysis of epileptic ECoG data. 15th Conference on Nonequilibrium Statistical Mechanics and Nonlinear Physics, 913, 203-208.http://dx.doi.org/10.1063/1.2746748
---------- CHICAGO ----------
Ortega, G.J., Sola, R.G., Pastor, J. "Global interactions analysis of epileptic ECoG data" . 15th Conference on Nonequilibrium Statistical Mechanics and Nonlinear Physics 913 (2007) : 203-208.http://dx.doi.org/10.1063/1.2746748
---------- MLA ----------
Ortega, G.J., Sola, R.G., Pastor, J. "Global interactions analysis of epileptic ECoG data" . 15th Conference on Nonequilibrium Statistical Mechanics and Nonlinear Physics, vol. 913, 2007, pp. 203-208.http://dx.doi.org/10.1063/1.2746748
---------- VANCOUVER ----------
Ortega, G.J., Sola, R.G., Pastor, J. Global interactions analysis of epileptic ECoG data. AIP Conf. Proc. 2007;913:203-208.http://dx.doi.org/10.1063/1.2746748
