Converging intracranial markers of conscious access. Export

@article{Gaillard:PlosBio:2009, abstract = {We compared conscious and nonconscious processing of briefly flashed words using a visual masking procedure while recording intracranial electroencephalogram (iEEG) in ten patients. Nonconscious processing of masked words was observed in multiple cortical areas, mostly within an early time window (<300 ms), accompanied by induced gamma-band activity, but without coherent long-distance neural activity, suggesting a quickly dissipating feedforward wave. In contrast, conscious processing of unmasked words was characterized by the convergence of four distinct neurophysiological markers: sustained voltage changes, particularly in prefrontal cortex, large increases in spectral power in the gamma band, increases in long-distance phase synchrony in the beta range, and increases in long-range Granger causality. We argue that all of those measures provide distinct windows into the same distributed state of conscious processing. These results have a direct impact on current theoretical discussions concerning the neural correlates of conscious access.}, author = {Gaillard, Rapha\"{e}l and Dehaene, Stanislas and Adam, Claude and Cl\'{e}menceau, St\'{e}phane and Hasboun, Dominique and Baulac, Michel and Cohen, Laurent and Naccache, Lionel}, citeulike-article-id = {4207312}, citeulike-linkout-0 = {http://dx.doi.org/10.1371/journal.pbio.1000061}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/19296722}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=19296722}, day = {17}, doi = {10.1371/journal.pbio.1000061}, issn = {1545-7885}, journal = {PLoS biology}, keywords = {consciousness}, month = {March}, number = {3}, pages = {e1000061+}, posted-at = {2009-11-05 14:53:54}, priority = {2}, publisher = {Public Library of Science}, title = {Converging intracranial markers of conscious access.}, url = {http://dx.doi.org/10.1371/journal.pbio.1000061}, volume = {7}, year = {2009} }

TY - JOUR ID - Gaillard:PlosBio:2009 L3 - citeulike-article-id:4207312 N2 - We compared conscious and nonconscious processing of briefly flashed words using a visual masking procedure while recording intracranial electroencephalogram (iEEG) in ten patients. Nonconscious processing of masked words was observed in multiple cortical areas, mostly within an early time window (<300 ms), accompanied by induced gamma-band activity, but without coherent long-distance neural activity, suggesting a quickly dissipating feedforward wave. In contrast, conscious processing of unmasked words was characterized by the convergence of four distinct neurophysiological markers: sustained voltage changes, particularly in prefrontal cortex, large increases in spectral power in the gamma band, increases in long-distance phase synchrony in the beta range, and increases in long-range Granger causality. We argue that all of those measures provide distinct windows into the same distributed state of conscious processing. These results have a direct impact on current theoretical discussions concerning the neural correlates of conscious access. IS - 3 JF - PLoS biology SN - 1545-7885 TI - Converging intracranial markers of conscious access. PB - Public Library of Science VL - 7 SP - e1000061 KW - consciousness AU - Gaillard, Raphaël AU - Dehaene, Stanislas AU - Adam, Claude AU - Clémenceau, Stéphane AU - Hasboun, Dominique AU - Baulac, Michel AU - Cohen, Laurent AU - Naccache, Lionel PY - 2009/03/17/ UR - http://dx.doi.org/10.1371/journal.pbio.1000061 ER -