Jean-Antoine Girault, MD, PhD, holds an Inserm research director position. He is currently head of the Institut du Fer à Moulin, an Inserm-UPMC center of research, with about ten teams working on the development and plasticity of the nervous system. His research is mainly on the signalling mechanisms involved in the plasticity of the nervous system, in normal and pathological conditions. The fields of application concern drug addiction and Parkinson disease, as well as axoglial interactions in myelinated fibers. The approaches used include molecular and cellular biology, functional neuroanatomy, and behavioural studies, etc. Member of various professional committees and the French and American societies for Neurosciences, Jean-Antoine Girault has actively participated in the creation of the Neuropôle de recherche francilien (NeRF). Very involved in teaching and training of young researchers and doctors, he has been the director of the Paris School of Neuroscience (ENP) between 2007 and 2009.