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Here, there and everywhere: higher visual function and the dorsal visual stream

Abstract

The dorsal visual stream, often referred to as the ‘where’ stream, represents the pathway taken by visual information from the primary visual cortex to the posterior parietal lobe and onwards. It partners the ventral or ‘what’ stream, the subject of a previous review and largely a temporal-based system. Here, we consider the dorsal stream disorders of perception (simultanagnosia, akinetopsia) along with their consequences on action (eg, optic ataxia and oculomotor apraxia, along with Balint's syndrome). The role of the dorsal stream in blindsight and hemispatial neglect is also considered.

  • NEUROOPHTHALMOLOGY
  • VISION
  • VISUAL ATTENTION
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  • Editors' commentary
    Phillip E M Smith Geraint N Fuller