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实验室

11:00-12:00, Tuesday, September 4, 2018


Speaker2: Zhaoping Li, Ph.D.

Professor of computational neuroscience,

Department of Computer Science in University College London

Topic: A new path to understanding vision from the perspective of the primary visual cortex

Host:     Minmin Luo, Ph.D.

Abstract

Recent data have supported the hypothesis that, in primates, the primary visual cortex (V1) creates a saliency map from visual input. The exogenous guidance of attention is then realized by means of monosynaptic projections to the superior colliculus, which can select the most salient location as the target of a gaze shift. V1 is less prominent, or is even absent in lower vertebrates such as fish; whereas the superior colliculus, called optic tectum in lower vertebrates, also receives retinal input. I review the literature and propose that the saliency map has migrated from the tectum to V1 over evolution. In addition, attentional benefits manifested as cueing effects in humans should also be present in lower vertebrates