A hierarchy of local timescales with a back (sensory)-to-front (prefrontal) gradient reflects brain region specialization. However, cognitive processes emerge from the coordinated activity across regions, and the corresponding timescales should refer to the interactions rather than to regional activity. Using edgewise connectivity on magnetoencephalography signals, we demonstrate a reverse front-to-back gradient when non-local interactions are prominent. Thus, the timescales are dynamic and reconfigure between back-to-front and front-to-back patterns.

中文翻译：

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动态相互作用重新配置了皮质时间尺度的梯度

具有后（感觉）到前（前额）梯度的局部时间尺度层次反映了大脑区域的专业化。然而，认知过程来自跨区域的协调活动，相应的时间尺度应该指的是相互作用而不是区域活动。在脑磁图信号上使用边缘连接，当非局部相互作用突出时，我们展示了一个反向的前后梯度。因此，时间尺度是动态的，并且在从前到后和从前到后的模式之间重新配置。