1. From the Departement of Neurology and the Laboratory of Functional Neurosciences (FRE CNRS 3291; O.G., M.R., J.M.B., C.L., S.C.), University Hospital of Amiens, Amiens, France; and the Department of Neurology (A.F., C.A., G.P.), Soissons Hospital, Soissons, France.