Time frequency analysis and spatial filtering in the evaluation of beta ERS after finger movement - Bianchi, AM; Foffani, G; Cerutti, S; Babiloni, C; Rossini, PM; Carducci, F; Babiloni, F; Cincotti, F (EMBC2001 Proc, 23rd Ann Intern Conf of the IEEE EMBS. Istanbul, Turkey, October, 2001)