title: EEG preprocessing for synchronization estimation and epilepsy lateralization.
abstract: The global framework of this paper is the synchronization analysis in EEG recordings. Two main objectives are pursued: the evaluation of the synchronization estimation for lateralization purposes in epileptic EEGs and the evaluation of the effect of the preprocessing (artifact and noise cancelling by blind source separation, wavelet denoising and classification) on the synchronization analysis. We propose a new global synchronization index, based on the classical cross power spectrum, estimated for each cerebral hemisphere. After preprocessing, the proposed index is able to correctly lateralize the epileptic zone in over 90% of the cases.
authors.affiliation: Depto. Electrónica, CUCEI-UDG, Av. Revolución 1500, 44840 Guadalajara, Jalisco, México. hugo.velez@red.cucei.udg.mx
authors.forename: H
authors.initials: H
authors.lastname: Vélez-Pérez
authors.forename: R
authors.initials: R
authors.lastname: Romo-Vázquez
authors.forename: R
authors.initials: R
authors.lastname: Ranta
authors.forename: V
authors.initials: V
authors.lastname: Louis-Dorr
authors.forename: L
authors.initials: L
authors.lastname: Maillard
mesh_terms: D000293:Adolescent; D000328:Adult; D000465:Algorithms; D001921:Brain / Q000503:physiopathology*; D003344:Cortical Synchronization; D003936:Diagnosis, Computer-Assisted / Q000379:methods*; D004827:Epilepsy / Q000175:diagnosis* / Q000503:physiopathology*; D005260:Female; D007839:Functional Laterality; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D055815:Young Adult