aDepartment of Neurology, Duke University Medical Center & Department of Biomedical Engineering, Duke Pratt School of Engineering, Durham, North Carolina, USA

bDepartment of Clinical Neuroscience, Lausanne University Hospital (CHUV) and University of Lausanne, Lausanne, Switzerland

cDepartment of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund

dAarhus University Hospital, Aarhus, Denmark

Correspondence to Sándor Beniczky, Visby Allé 5, Dianalund 4293, Denmark. E-mail: [email protected]