The Color and Motion Systems as Guides to Conscious Visual Perception

Part of the Cerebral Cortex book series (CECO, volume 12)


Is there one overall consciousness or are there many? Does each system have its own mechanism for conscious experience or is consciousness suprasystemic? Can each of the many visual areas that constitute the primate visual brain contribute directly to conscious experience, without the necessity for pre- or postprocessing by other visual areas, and especially by the primary visual cortex (area V 1)? Such questions may have been asked before, but, with the discovery of functional specialization in the primate visual cortex (Zeki, 1974b, 1978a; Livingstone and Hubel, 1984a), they have become mandatory. In any case, there never has been a more propitious time for addressing them experimentally than the present. In this chapter, I do so with reference to the visual motion and color systems.


Visual Cortex Visual Area Striate Cortex Superior Temporal Sulcus Positron Emission Tomography 
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© Springer Science+Business Media New York 1997

Authors and Affiliations

  • S. Zeki
    • 1
  1. 1.Wellcome Department of Cognitive NeurologyUniversity College LondonLondonEngland

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