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Publication Detail
Inducing conscious perception of colour in blindsight
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Silvanto V, Cowey A, Walsh V
  • Publication date:
    2008
  • Pagination:
    R950, R951
  • Journal:
    Current Biology
  • Volume:
    18
  • Issue:
    20
  • Print ISSN:
    0960-9822
Abstract
The phenomenon of blindsight, namely, the manifestation by forced-choice guessing of visual processing despite the total loss of visual awareness caused by damage to striate cortex (V1) [1] has influenced many current theories of visual awareness [2, 3]. Here we investigated whether hemianopic GY is able to consciously experience colour in his blind field by using a TMS-chromatic adaptation paradigm in which TMS applied after visual adaptation to a coloured background preferentially facilitates the perception of the adapted attribute [4]. Our results show that GY can perceive colour in his blind field, and that the identity of the colour is determined by the contralesional hemisphere.
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