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      Conscious, preconscious, and subliminal processing: a testable taxonomy.

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          Abstract

          Of the many brain events evoked by a visual stimulus, which are specifically associated with conscious perception, and which merely reflect non-conscious processing? Several recent neuroimaging studies have contrasted conscious and non-conscious visual processing, but their results appear inconsistent. Some support a correlation of conscious perception with early occipital events, others with late parieto-frontal activity. Here we attempt to make sense of these dissenting results. On the basis of the global neuronal workspace hypothesis, we propose a taxonomy that distinguishes between vigilance and access to conscious report, as well as between subliminal, preconscious and conscious processing. We suggest that these distinctions map onto different neural mechanisms, and that conscious perception is systematically associated with surges of parieto-frontal activity causing top-down amplification.

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          Author and article information

          Journal
          Trends Cogn Sci
          Trends in cognitive sciences
          Elsevier BV
          1364-6613
          1364-6613
          May 2006
          : 10
          : 5
          Affiliations
          [1 ] INSERM-CEA Cognitive Neuroimaging Unit, Service Hospitalier Frédéric Joliot, Orsay, France. dehaene@shfj.cea.fr
          Article
          S1364-6613(06)00079-9
          10.1016/j.tics.2006.03.007
          16603406
          b5ec2229-d693-4e7b-b2c0-dbf333891446
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