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Publication Detail
Fast backprojections from the motion to the primary visual area necessary for visual awareness.
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Pascual-Leone A, Walsh V
  • Publication date:
    04/2001
  • Pagination:
    510, 512
  • Journal:
    Science
  • Volume:
    292
  • Issue:
    5516
  • Print ISSN:
    0036-8075
  • Keywords:
    Visual, TMS, awareness, vision
  • Notes:
    Imported via OAI, 7:29:01 15th Aug 2007
Abstract
Much is known about the pathways from photoreceptors to higher visual areas in the brain. However, how we become aware of what we see or of having seen at all is a problem that has eluded neuroscience. Recordings from macaque V1 during deactivation of MT+/V5 and psychophysical studies of perceptual integration suggest that feedback from secondary visual areas to V1 is necessary for visual awareness. We used transcranial magnetic stimulation to probe the timing and function of feedback from human area MT+/V5 to V1 and found its action to be early and critical for awareness of visual motion.
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