Zhaoping Li

Title: The central-peripheral dichotomy in visual decoding

Abstract:
Visual attention selects a tiny amount of information that can be deeply processed by the brain, and gaze shifts bring the selected visual object to fovea, the center of the visual field, for better visual decoding or recognition of the selected objects.  Therefore, central and peripheral vision should differ qualitatively in visual decoding, rather than just quantitatively in visual acuity.
Since much of the visual attentional selection is guided by the primary visual cortex V1 (see https://webdav.tuebingen.mpg.de/u/zli/V1Saliency.html for pre-reading materials), the central-peripheral dichotomy should be particularly reflected in neural computation in V1 together with higher visual cortical areas along the visual pathway.  I will introduce the recent proposal that the top-down feedback from higher to lower visual areas such as V1 for the computation of analysis-by-synthesis in visual decoding is weaker or absent in the peripheral visual field (https://webdav.tuebingen.mpg.de/u/zli/Central-Peripheral.html).
Theoretical predictions and experimental data  will be explained in detail.

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