About the Authors

Stefan Jongen

stefan.jongen@maastrichtuniversity.nl

Affiliation Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands

Joy Perrier

Affiliations Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands, U 1075 COMETE, INSERM, Caen, France

Eric F. Vuurman

Affiliation Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands

Johannes G. Ramaekers

Affiliation Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands

Annemiek Vermeeren

Affiliation Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands

Competing Interests

Dr. E.F. Vuurman is a full time employee of Maastricht University and has received grants/research support grants from GlaxoSmithKline, Transcept, and Merck companies. Prof. Dr. J.G. Ramaekers is a full time employee of Maastricht University and has received grants/research support from NWO, ZonMW, EU, Dutch Ministry of Infrastructure and Environment and Lundbeck. Dr. A. Vermeeren is a full time employee of Maastricht University. As employee of Maastricht University, she participated—as investigator—in studies sponsored by for-profit businesses (Transcept Pharmaceuticals Inc, Purdue Pharma LP, Merck Sharp and Dohme) and non-profit organizations (Dutch Ministry of Infrastructure and Environment) She acted as a consultant for IntecPharma. The other authors have nothing to disclose. This does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: SJ AV EFV JGR JP. Performed the experiments: SJ JP. Analyzed the data: SJ JP EFV JGR AV. Contributed reagents/materials/analysis tools: SJ JP EFV JGR AV. Wrote the paper: SJ AV EFV JGR JP.