Preserved Feedforward But Impaired Top-Down Processes in the Vegetative StateScience 13 May 2011: Vol. 332 no. 6031 pp. 858-862 DOI: 10.1126/science.1202043 Melanie Boly1,2,*, Marta Isabel Garrido2, Olivia Gosseries1, Marie-Aurélie Bruno1, Pierre Boveroux3, Caroline Schnakers1, Marcello Massimini4, Vladimir Litvak2, Steven Laureys1, and Karl Friston2 1Coma Science Group, Cyclotron Research Centre and Neurology Department, University of Liège and CHU Sart Tilman Hospital, 4
