The neocortex is a multi-scale network, with intricate local circuitry interwoven into a global mesh of long-range connections. Neural activity propagates within this network on a wide range of temporal and spatial scales. At the micro scale, neurophysiological recordings reveal coordinated dynamics in local neural populations, which support behaviorally relevant computations. At the macro scale, neuroimaging modalities measure global activity fluctuations organized into spatiotemporal patterns across the entire brain. Here we review recent advances linking the local and global scales of cortical dynamics and their relationship to behavior. We argue that diverse experimental observations on the dimensionality and variability of neural activity can be reconciled by considering how activity propagates in space and time on multiple spatial scales.

中文翻译：

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关于大规模皮层动力学的维度和变异性的新视角。

新皮质是一个多尺度网络，复杂的局部电路交织成远程连接的全局网格。神经活动在该网络内以广泛的时间和空间尺度传播。在微观尺度上，神经生理学记录揭示了局部神经群体的协调动态，这支持行为相关的计算。在宏观尺度上，神经影像学方法测量整个大脑组织成时空模式的全局活动波动。在这里，我们回顾了将局部和全球范围的皮质动力学及其与行为的关系联系起来的最新进展。我们认为，通过考虑活动如何在多个空间尺度上的空间和时间传播，可以协调对神经活动的维度和变异性的不同实验观察。