1 Institute for Molecular Medicine, Faculty of Medicine, University of Lisbon, Lisbon, Portugal. Electronic address: Tiago.V.Maia@gmail.com.
2 Centre for Addictive Disorders, Hospital of Psychiatry, University of Zurich, and Translational Neuromodeling Unit, Institute of Biomedical Engineering, University of Zurich and the Swiss Federal Institute of Technology Zurich, Zurich, Switzerland.
3 Department of Cognitive, Linguistic and Psychological Sciences, Department of Psychiatry and Human Behavior, and the Brown Institute for Brain Science, Brown University, Providence, Rhode Island.