BRAIN A JOURNAL OF NEUROLOGY With or without spikes: localization of focal epileptic activity by simultaneous electroencephalography and functional magnetic resonance imaging

1 Presurgical Epilepsy Evaluation Unit and Functional Brain Mapping Laboratory, Neurology Department, University Hospital, University of Geneva, 1 Geneva, Switzerland 2 Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology and Epilepsy Society, London, WC1N 3BG, UK 3 Department of Paediatric Neurology, Children’s Hospital, Christian-Albrechts-University of Kiel, 24098 Kiel, Germany 4 Department of Neurosurgery, University Hospital, University of Geneva, 1211 Geneva, Switzerland 5 Department of Children and Adolescents Psychiatry and Psychotherapy, Philipps-University of Marburg, 35037 Marburg, Germany