论文标题

兴奋性抑制分支过程:皮质异步状态,兴奋性和临界性的简约观点

The excitatory-inhibitory branching process: a parsimonious view of cortical asynchronous states, excitability, and criticality

论文作者

López, Roberto Corral, Buendía, Victor, Muñoz, Miguel A.

论文摘要

分支过程是广泛用于神经科学的传播动态,雪崩和关键性的最小模型。 IT的一个简单扩展,添加抑制性节点,引起了一种非常富裕的现象学,包括在静止和饱和度之间的中间相,在皮质网络中表现出“异步状态”的关键特征。值得注意的是,在以抑制为主的情况下,它表现出极其富裕的相图,捕获了自发性大脑活动的许多非平凡特征,例如集体兴奋性,滞后性,滞后雪崩形状以及部分同步,使我们能够在一个普通的典型框架内合理地使我们合理地使震惊的经典发现合理化。

The branching process is the minimal model for propagation dynamics, avalanches and criticality, broadly used in neuroscience. A simple extension of it, adding inhibitory nodes, induces a much-richer phenomenology, including, an intermediate phase, between quiescence and saturation, that exhibits the key features of "asynchronous states" in cortical networks. Remarkably, in the inhibition-dominated case, it exhibits an extremely-rich phase diagram, that captures a wealth of non-trivial features of spontaneous brain activity, such as collective excitability, hysteresis, tilted avalanche shapes, and partial synchronization, allowing us to rationalize striking empirical findings within a common and parsimonious framework.

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