在小鼠视觉皮层中的刺激依赖功能网络拓学.
Disheng Tang1,2,3, Joel Zylberberg4,5,6, Xiaoxuan Jia1,3,7,8,6
1School of Life Sciences, Tsinghua University.
bioRxiv : the preprint server for biology
|July 18, 2023
概括
大脑网络根据刺激类型动态改变功能连接. 虽然动机频率保持稳定,神经元的身份发生变化,区域处理随着刺激的复杂性而增加,揭示了依赖刺激的神经相互作用.
科学领域:
- 神经科学是一个神经科学.
- 计算神经科学是一种神经科学.
- 系统神经科学 系统神经科学
背景情况:
- 神经网络通过固定的解剖学但可变的功能连接来处理信息.
- 功能连接性随着持续的神经元活动的变化而发生变化,这表明刺激依赖.
研究的目的:
- 为了研究不同的刺激是否诱导神经网络中的刺激依赖功能连接模式.
- 探索神经元相互作用如何在响应不同感官输入时动态变化.
主要方法:
- 来自艾伦大脑天文台的电生理学数据的分析.
- 从小鼠视觉皮层的数百个神经元同时记录刺激唤起的神经元活动,使用Neuropixels探针.
- 通过分析高时间准确度的单细胞分辨率记录来确定微量级的功能连接.
主要成果:
- 连接动机的频率 (神经元的三重组) 在不同的刺激中被保留.
- 参与连接动机的特定神经元随着刺激呈现而动态变化.
- 随着刺激复杂性的增加,功能模块在单个大脑区域内变得更加局部化.
结论:
- 神经网络表现出刺激依赖的功能连接,动态改变神经元参与稳定的动机结构.
- 大脑通过改变基于刺激复杂性的功能连接来动态调整其计算策略.
- 这项研究揭示了神经相互作用如何适应传入的感官信息的意想不到机制.
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