1 Department of Neurology, Amiens University Hospital, Amiens, France.
2 Laboratory of Functional Neurosciences (UR UPJV 4559), Amiens University Hospital, Amiens, France.
3 Department of Nuclear Imaging, Amiens University Hospital, Amiens, France.
4 Department of Neurology, Helios Dr. Horst Schmidt Kliniken, Wiesbaden and Institute for Stroke and Dementia Research, University Hospital of Munich (LMU), Munich, Germany.