【TTJU青椒学术沙龙】（第253期）预告：大脑巧运行，记忆方有序
大脑巧运行，记忆方有序
◆【TTJU青椒学术沙龙】第253期◆
医学部/精仪学院 郑晨光
天津大学青椒学术沙龙面向学生开放报名啦！
想和青年导师亲切交流么？
想获取更多新奇的知识么？
在这里，你可以与不同学科的青年教师相互探讨
在这里，你可以与不同学院的同学相互交流
在这里，你可以涉猎更多感兴趣的领域和问题
在这里，你可以实现思维的碰撞，产生创新的火花
欢迎各位同学，关注报名参与！
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基本信息
时间：2023年03月31日（周五）中午12:30
本学期“Transactions of Tianjin University”青椒沙龙采取线上线下结合的方式进行，活动线下进行的同时，通过线上同步进行。具体信息如下：
线下地点：卫津路校区教职工文化活动中心多功能厅
线上链接：点击链接或扫码下方二维码即可收看：
https://tci.h5.xeknow.com/sl/1kR3EJ 密码：4864
Lecture: Good memory needs sequential coding in the brain
When: 12:30 p.m., Friday, March 31, 2023
Where&How: The lecture will be held at Multifunctional Hall, Cultural Activity Center for Faculty and Staff, Weijin Road Campus，and be delivered online:
Click the link or scan the QR code below to watch
https://tci.h5.xeknow.com/sl/1kR3EJ Code：4864
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报名方式
点击“阅读原文”进行报名
报名截止时间：03月31日上午10：00
沙龙期间提供茶点
Click "read the original" to sign up
Registration deadline: 10:00 am, March 31, 2023
Refreshments are provided during the salon
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主讲人简介 / Lecturer
郑晨光，天津大学医学部/精仪学院教授，2013年毕业于南开大学计算神经生理实验室获博士学位，在美国UT Austin学习记忆中心Laura Colgin课题组从事博士后研究。科研工作聚焦于解码大脑神经网络中复杂的放电活动，以揭示多种认知与记忆行为的重要神经机制。主持多项国家级、科技部及天津市级科研项目，在Neuron、Nature Communications等期刊发表论文30篇，参与撰写神经科学类书籍2部。
Lecturer:
Chenguang Zheng received her bachelor’s degree in mathematics and Ph.D degree in bioinformatics from Nankai University. She was trained as a postdoc researcher in Laura Lee Colgin’s lab in the University of Texas at Austin for 5 years. In Sep 2018, she started her own lab in the department of biomedical engineering in Tianjin University. Her lab aims to understand how brain rhythms coordinate sequential firing of cell ensembles in the hippocampal-prefrontal network during spatial navigation and memory.
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报告内容简介/About the Lecture
【内容简介】
大脑的空间认知能力是实现情景记忆的基本功能，其编码机制是目前认知神经科学中亟待研究的前沿热点问题。报告将从细胞-集群-网络等多角度介绍空间记忆功能的跨尺度编码模型，聚焦任务态中大鼠海马位置细胞集群的序列性放电活动规律，挖掘慢和快gamma神经节律实现空间学习与记忆功能的神经编码机制。通过全新的目标导向空间记忆范式设计，研究海马theta序列在正确/错误的记忆提取中序列压缩性和节律相位表征特性变化，揭示SWRs记忆重放事件对预测精确目标位置的强时空压缩性。本研究有助于我们深入理解海马中协调性序列放电实现记忆编码与提取的神经机制。
【相关学科领域方向】
脑科学、生物医学工程、计算神经科学
About the Lecture:
Theta rhythms temporally coordinate sequences of hippocampal place cell ensembles during active behaviors, while sharp wave-ripples coordinate place cell sequences during rest. We investigated whether such coordination of hippocampal place cell sequences is disrupted during error trials in a goal-directed spatial memory task. As a reward location was learned across trials, place cell sequences developed that represented temporally compressed paths to the reward location during the approach to the reward location. Less compressed paths were represented on error trials as an incorrect stop location was approached. During rest periods of correct but not error trials, place cell sequences developed a bias to replay representations of paths ending at the correct reward location. These results support the hypothesis that coordination of place cell sequences by theta rhythms and sharp wave-ripples develops as a reward location is learned and further suggest that different hippocampal ensembles may coordinately modulate the spatial memory process.
Related Research Directions:
Brain science, Biomedical Engineering, Computational Neuroscience
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其他 / Organizers
【主办单位】
校工会、化工学院、医学部、精仪学院、校青年教师联谊会、校研究生会
【技术支持】
远教学院
Organizers:
Trade Unions, School of Chemical Engineering and Technology, Medical College, School of Precision Instrument and Opto-electronics Engineering, Young Teachers Association, Graduate Union
Technical support:
School of Distance and Continuing Education
TTJU简介
供稿人：医学部 郑晨光 孟琳
编辑：代成龙
审核：靳学峰 张建斌