在自发条件下的脑管弦乐队:从V1区域的功能架构中识别通信模块
Maria Papadopouli1,2, Ioannis Smyrnakis3, Emmanouil Koniotakis2
1Department of Computer Science, University of Crete, Heraklion, Greece.
bioRxiv : the preprint server for biology
|March 18, 2024
概括
鼠标视觉皮层 (V1) 的功能连接显示了模块化的神经元组合. 内在状态强烈影响神经元的相关性,4层 (L4) 到2/3层 (L2/3) 传输显示高精度.
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:
- 了解主要视觉皮层 (V1) 中的功能连接对于破译神经计算至关重要.
- 自发的神经活动在塑造网络架构和信息处理方面发挥着重要作用.
- 以前的研究已经探索了神经元相关性,但在V1层之间绘制详细的功能连接仍然是一个活跃的研究领域.
研究的目的:
- 在自发条件下绘制鼠标V1颗粒 (L4) 和超颗粒 (L2/3) 层内和跨颗粒 (L4) 和超颗粒 (L2/3) 层的功能连接架构.
- 研究神经元接近,调相似性和内部状态对功能连接的影响.
- 描述V1微电路中的网络属性,枢纽结构和信息传输路径.
主要方法:
- 利用双光子成像来记录鼠标V1.1的神经活动.
- 应用了扩展的尖峰时间化系数 (STTC) 来量化神经元对之间的功能连接.
- 分析了神经元距离,调相似性,瞳孔直径和总体神经元活动对连接模式的影响.
主要成果:
- 功能连接在附近的神经元之间 (19-34%在300微米范围内) 与远处的神经元 (~10%在1毫米范围内) 之间更为普遍.
- 内部状态 (瞳孔直径,总活动) 对相关性的影响比调相似性更强.
- 第4层呈现出独特的连接分布,支持一个模块化组合架构,用于将信息传输到L2/3,并制定了管理模块之间的通信的特定规则.
结论:
- 鼠标V1中的自发活动揭示了L4和L2/3.3的模块化神经元组合结构.
- 信息传输主要从L4神经元组合向L2/3组合进行,其特点是高灵敏度,精度和特异性.
- 不同的连接模块具有不同的操作规则,突出显示了V1微电路通信的复杂性.
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