Preserved feedforward but impaired top-down processes in the vegetative state.
Science (New York, N.Y.) May 13, 2011 Melanie Boly, Marta Isabel Garrido, Olivia Gosseries et al.
Frontoparietal cortex is involved in the explicit processing (awareness) of stimuli. Frontoparietal activation has also been found in studies of subliminal stimulus processing. We hypothesized that an impairment of top-down processes, involved in recurrent neuronal message-passing and the generation of long-latency electrophysiological responses, might provide a more reliable correlate of...