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首页> 外文期刊>The European Journal of Neuroscience >Nasal respiration entrains neocortical long-range gamma coherence during wakefulness
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Nasal respiration entrains neocortical long-range gamma coherence during wakefulness

机译：鼻腔呼吸夹带新皮肤的远程γ连贯在清醒期间

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Recent studies have shown that slow cortical potentials in archi-, paleo- and neocortex can phase-lock with nasal respiration. In some of these areas, gamma activity (gamma: 30-100 Hz) is also coupled to the animal's respiration. It has been hypothesized that these functional relationships play a role in coordinating distributed neural activity. In a similar way, inter-cortical interactions at gamma frequency have also been associated as a binding mechanism by which the brain generates temporary opportunities necessary for implementing cognitive functions. The aim of the present study is to explore whether nasal respiration entrains inter-cortical functional interactions at gamma frequency during both wakefulness and sleep. Six adult cats chronically prepared for electrographic recordings were employed in this study. Our results show that during wakefulness, slow cortical respiratory potentials are present in the olfactory bulb and several areas of the neocortex. We also found that these areas exhibit cross-frequency coupling between respiratory phase and gamma oscillation amplitude. We demonstrate that respiratory phase modulates the inter-cortical gamma coherence between neocortical electrode pairs. On the contrary, slow respiratory oscillation and gamma cortical oscillatory entrainments disappear during non-rapid eye movement and rapid eye movement sleep. These results suggest that a single unified phenomenon involves cross-frequency coupling and long-range gamma coherence across the neocortex. This fact could be related to the temporal binding process necessary for cognitive functions during wakefulness.
机译：最近的研究表明，Archi-，Paleo-and Neocortex中的缓慢皮质电位可以用鼻呼吸锁相。在这些区域中的一些，γ活性（γ：30-100Hz）也与动物的呼吸相连。已经假设这些功能关系在协调分布式神经活动中发挥作用。以类似的方式，伽玛频率的皮质间相互作用也与绑定机制相关联，通过该机制，大脑产生实现认知功能所需的临时机会。本研究的目的是探讨鼻腔呼吸是否纳入伽马频率在醒来和睡眠期间的皮质间功能相互作用。本研究采用了六个慢性制备用于拍摄记录的成年猫。我们的研究结果表明，在醒来的过程中，嗅觉灯泡中存在缓慢的皮质呼吸潜力和Neocortex的几个区域。我们还发现这些区域在呼吸相和伽马振荡幅度之间表现出横频耦合。我们证明呼吸相调节新奇电极对之间的皮质间γ连贯性。相反，在非快速眼球运动和快速眼球运动睡眠期间，慢慢呼吸振荡和伽马皮质振荡夹带消失。这些结果表明，单一统一现象涉及跨越新皮质的横频耦合和远程伽马连贯。这一事实可能与在清醒期间认知函数所必需的时间结合过程有关。

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