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

Zhaoping, L

doi:10.1016/j.conb.2019.06.001

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

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Zhaoping, L
Department of Sensory and Sensorimotor Systems, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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https://www.sciencedirect.com/science/article/abs/pii/S0959438819300042
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Citation

Zhaoping, L. (2019). A new framework for understanding vision from the perspective of the primary visual cortex. Current Opinion in Neurobiology, 58, 1-10. doi:10.1016/j.conb.2019.06.001.

Cite as: https://hdl.handle.net/21.11116/0000-0003-B711-B

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.