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      A new framework for understanding vision from the perspective of the primary visual cortex

      Current Opinion in Neurobiology
      Elsevier BV

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          Abstract

          Visual attention selects only a tiny fraction of visual input information for further processing. Selection starts in the primary visual cortex (V1), which creates a bottom-up saliency map to guide the fovea to selected visual locations via gaze shifts. This motivates a new framework that views vision as consisting of encoding, selection, and decoding stages, placing selection on center stage. It suggests a massive loss of non-selected information from V1 downstream along the visual pathway. Hence, feedback from downstream visual cortical areas to V1 for better decoding (recognition), through analysis-by-synthesis, should query for additional information and be mainly directed at the foveal region. Accordingly, non-foveal vision is not only poorer in spatial resolution, but also more susceptible to many illusions.

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          Author and article information

          Journal
          Current Opinion in Neurobiology
          Current Opinion in Neurobiology
          Elsevier BV
          09594388
          October 2019
          October 2019
          : 58
          : 1-10
          Article
          10.1016/j.conb.2019.06.001
          31271931
          ecbca388-eaed-4b0f-836b-7aa76c3ae9da
          © 2019

          https://www.elsevier.com/tdm/userlicense/1.0/

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