Affiliation: | (1) MRC Cyclotron Unit, Hammersmith Hospital, Du Cane Road, W12 OHS London, UK;(2) Divisione Neurologia, Ospedale Niguarda, Piazza Ospedale 5, I-20139 Milan, Italy;(3) Dipartimento di Psicologia, Universita' La Sapienza , Via dei Marsi 78, I-00185 Rome, Italy;(4) Divisione Neurologia II, Ospedale Civile, Universita' di Brescia, P.le Ospedale 1, I-25125 Brescia, Italy;(5) Department of Experimental Psychology, University of Oxford, South Park Road, OX1 3UD Oxford, UK;(6) Psychology Department, University College of London, Gower Street, WC1 E6TB London, UK |