| Author(s) | Organization(s) | Session |
| Ohi, Kazutaka | Department of Neuropsychiatry, Kanazawa Medical University, Japan | Psychiatry |
| Okada, Yoshio | Division of Newborn Medicine, Department of Medicine, Boston Children’s Hospital | Neurology and Methods |
| Okubo, Hiroaki | Department of Neuropsychiatry, Kanazawa Medical University, Japan | Psychiatry |
| Olbrich, Sebastian | Department for Psychiatry, University Zurich, Switzerland | EEG for personalized Treatment in Psychiatry EEG for personalized Treatment in Psychiatry Presenter |
| Olivi, Emmanuel | Inria, France | Neurology and Methods |
| Oostenveld, Robert | Centre for Cognitive Neuroimaging, Donders Institute for Brain, Cognition and Behaviour, Radboud University, The Netherlands; NatMEG, Karolinska Institute, Sweden | Neurology and Methods |
| Oostenveld, Robert | Donders Institute, Radboud University, Nijmegen, Netherlands | Modelling and Methods |
| Ossenblok, Pauly | Academic Center for Epileptology, Kempenhaeghe & Maastricht UMC+; Biomedical Engineering, Biomedical Image Analysis, Eindhoven University of Technology | Neurology and Methods |