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20180702 Chengcheng Huang-Propagation and modulation of information in visual pathway

发布时间:2018-06-26 09:25    浏览次数:    来源:

题目:Propagation and modulation of information in visual pathway
报告人: Chengcheng Huang
时间: 7月2日上午11:00-12:00
地点: 数学院425
摘要:How neuronal variability impacts neural codes is a central question in systems neuroscience, often with complex and model dependent answers. Most population models are parametric, with tacitly assumed structure of neuronal tuning and population variability. While these models provide key insights, they cannot inform how the physiology and circuit wiring of cortical networks impact information flow. In this work, we study information propagation in spatially ordered neuronal networks. We focus on the effects of feedforward and recurrent projection widths relative to columnar width, as well as attentional modulation. We show that narrower feed forward projection width increases the saturation rate of information. In contrast, the recurrent projection width with spatially balanced excitation and inhibition has small effects on information. Further, we show that attention improves information flow by suppressing the internal dynamics of the recurrent network.
报告人简介:Dr. Chengcheng Huang,Pittsburgh 大学数学系博士后。2015年博士毕业于纽约大学Courant 数学研究所,2010 年本科毕业于南京大学。2017 年荣获美国神经科学领域的Swartz 奖。在Current Opinion in Neurobiology 等国际一流学术期刊上发表多篇论文。

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