KOICHI SAMESHIMA

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Departamento de Radiologia, Faculdade de Medicina - Docente
LIM/43 - Laboratório de Medicina Nuclear, Hospital das Clínicas, Faculdade de Medicina - Líder

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  • article 10 Citação(ões) na Scopus
    Brain network dynamics characterization in epileptic seizures
    (2014) RODRIGUES, A. C.; MACHADO, B. S.; FLORENCE, G.; HAMAD, A. P.; SAKAMOTO, A. C.; FUJITA, A.; BACCALA, L. A.; AMARO JR., E.; SAMESHIMA, K.
    Here we propose and evaluate a new approach to analyse multichannel mesial temporal lobe epilepsy EEG data from eight patients through complex network and synchronization theories. The method employs a Granger causality test to infer the directed connectivity graphs and a wavelet transform based phase synchronization measure whose characteristics allow studying dynamical transitions during epileptic seizures. We present a new combined graph measure that quantifies the level of network hub formation, called network hub out-degree, which closely reflects the level of synchronization observed during the ictus.