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全球大脑动态嵌入 Caenorhabditis elegans 的运动指令序列

Saul Kato¹, Harris S Kaplan¹, Tina Schrödel¹

¹Research Institute of Molecular Pathology IMP, Vienna Biocenter VBC, Dr. Bohr-Gasse 7, 1030 Vienna, Austria.

|October 20, 2015

概括

科学家发现C. elegans的协调大脑活动形成了动态循环, 组织神经网络以产生复杂的动作序列,

科学领域:

神经科学
计算神经科学
系统神经科学

背景情况:

了解个体神经元活动如何整合到复杂的行为是神经科学的一个关键挑战.
之前的研究已经将单独的运动行为与神经网络活动联系起来, 但缺乏对顺序行为组合的框架.

研究的目的:

调查神经机理的基础组织运动指令成序列的行为.
探索全球大脑动力学如何为行动选择和行为排序做出贡献.

主要方法:

在线虫Caenorhabditis elegans中使用全脑成像.
在大比例的神经元中分析了协调的动态网络活动.
在一次试验基础上将网络活动动态映射到特定的电机命令中.

主要成果:

识别了循环大脑网络动态,其中不同的神经元子群被连续招募.
证明这些动态循环直接映射到动物的跑转动作序列.
显示这些动态促进了行动选择和选择行为之间的决策.

结论:

全球大脑动力学, 通过协调的神经元活动模式, 提供了一个组织复杂行为的支架.
神经元子群的循环招募对于将运动指令组装成动作序列至关重要.
这项研究揭示了通过全球大脑动态进行高层次行为组织的机制.

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