Preservation and Changes in Oscillatory Dynamics across the Cortical Hierarchy.

Preservation and Changes in Oscillatory Dynamics across the Cortical Hierarchy.
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DOI:
10.1162/jocn_a_01600
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发表时间:
2020-10
影响因子:
3.2
通讯作者:
Miller EK
Miller EK
中科院分区:
医学3区
文献类型:
--
作者:
Lundqvist M;Bastos AM;Miller EK

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西塔(2-8赫兹)、阿尔法(8-12赫兹)、贝塔(12-35赫兹)和伽马(>35赫兹)节律在大脑皮层中普遍存在。然而,对于它们在不同的皮质区域是否具有相似的特性和功能,人们几乎没有了解,因为它们很少被跨区域进行比较。我们同时记录了猴子大脑皮层多个层次上的神经元棘波和局部场电位。西塔、阿尔法、贝塔和伽马振荡与视觉、顶叶和前额叶皮质的刺激性活动有类似的关系。然而,所有频段的频率在大脑皮层层次上都有所增加。这些结果表明,这些节律在大脑皮层具有相似的抑制和兴奋功能。我们讨论了在大脑皮层层级上频率的增加如何有助于塑造大脑皮层的流动和处理。
Theta (2–8 Hz), alpha (8–12 Hz), beta (12–35 Hz), and gamma (>35 Hz) rhythms are ubiquitous in the cortex. However, there is little understanding of whether they have similar properties and functions in different cortical areas because they have rarely been compared across them. We record neuronal spikes and local field potentials simultaneously at several levels of the cortical hierarchy in monkeys. Theta, alpha, beta, and gamma oscillations had similar relationships to spiking activity in visual, parietal, and prefrontal cortices. However, the frequencies in all bands increased up the cortical hierarchy. These results suggest that these rhythms have similar inhibitory and excitatory functions across the cortex. We discuss how the increase in frequencies up the cortical hierarchy may help sculpt cortical flow and processing.
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