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Abstract #3110

Partial least squares regression of dynamic functional connectivity and EEG reveals the epileptic network activity

Maria Giulia Preti 1,2 , Nora Leonardi 1,2 , F. Isik Karahanoglu 1,2 , Frdric Grouiller 3 , Mlanie Genetti 4 , Margitta Seeck 5 , Serge Vulliemoz 5 , and Dimitri Van De Ville 1,2

1 Institute of Bioengineering, Ecole Polytechnique Fdrale de Lausanne (EPFL), Lausanne, VD, Switzerland, 2 Medical Imaging Processing Lab, University of Geneva, Geneva, Switzerland, 3 Department of Radiology and Medical Informatics, Geneva University Hospitals, Geneva, Switzerland, 4 Functional Brain Mapping Lab, University Hospital and Faculty of Medicine of Geneva, Geneva, Switzerland, 5 EEG and Epilepsy Unit, Neurology and Functional Brain Mapping Lab, University Hospital and Faculty of Medicine of Geneva, Geneva, Switzerland

Focal epilepsy is characterized by a not yet fully understood abnormal brain network organization that can be addressed with the integration of EEG, revealing the epileptic activity, and dynamic functional connectivity, exploring the connections dynamics during resting-state functional magnetic resonance imaging. We proposed a new method to combine the two techniques using partial least squares regression, aiming to assess the functional subnetworks related to epileptic activity. Results for one subject were consistent with previous literature, encouraging a new spectrum of future analysis with this method.

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