学术报告会：High frequency synchronization improves firing rate contrast and informaiton transmission efficiency of neural systems

报告题目：High frequency synchronization improves firing rate contrast and informaiton transmission efficiency of neural systems

报告人：韩芳(东华大学 教授、博导)

时间：6月11日下午16:00-17:00

腾讯会议：会议ID：546 486 009

个人简介：

韩芳，东华大学教授、博导。主要从事神经动力系统模拟计算、信息处理以及深度学习神经网络的应用研究等工作，发表SCI论文20余篇（第一/通讯作者13篇）、EI论文10余篇（第一/通讯作者10篇），申请发明专利10余项。主持国家自然科学基金项目2项和上海市晨光人才计划项目1项，参与完成多项国家和省部级项目，担任国家自然科学基金面上项目评审人。

Abstract：High frequency synchronization has been found in many real neural systems and is confirmed by excitatory/inhibitory (E/I) network models. However, what the functional role it plays remains elusive. Inspired by well-known mechanism of local contrast enhancement of lateral inhibition, where neighboring excitatory neurons inhibit one another through lateral inhibitory neurons and thereby enhance the firing rate contrast of these neighboring neurons, this paper found that high frequency synchronization of inhibitory neurons in E/I network acts as global inhibition, and with this global inhibition, the firing rate contrast of all the neurons is enhanced. Furthermore, this global firing rate contrast enhancement can prevent the firing times of the neurons measured within a limited time window from being confused by noise, thereby enhance the information encoding efficiency of neural systems, which is quantified by entropy theory.