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首页> 外文期刊>Current Biology: CB >Theta Oscillations during Active Sleep Synchronize the Developing Rubro-Hippocampal Sensorimotor Network
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Theta Oscillations during Active Sleep Synchronize the Developing Rubro-Hippocampal Sensorimotor Network

机译:主动睡眠期间的振动器同步开发的Rubro-hippocampal Sensimotor网络

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摘要

Neuronal oscillations comprise a fundamental mechanism by which distant neural structures establish and express functional connectivity. Long-range functional connectivity between the hippocampus and other forebrain structures is enabled by theta oscillations. Here, we show for the first time that the infant rat red nucleus (RN)-a brainstem sensorimotor structure-exhibits theta (4-7 Hz) oscillations restricted primarily to periods of active (REM) sleep. At postnatal day 8 (P8), theta is expressed as brief bursts immediately following myoclonic twitches; by P12, theta oscillations are expressed continuously across bouts of active sleep. Simultaneous recordings from the hippocampus and RN at P12 show that theta oscillations in both structures are coherent, co-modulated, and mutually interactive during active sleep. Critically, at P12, inactivation of the medial septum eliminates theta in both structures. The developmental emergence of theta-dependent functional coupling between the hippocampus and RN parallels that between the hippocampus and prefrontal cortex. Accordingly, disruptions in the early expression of theta could underlie the cognitive and sensorimotor deficits associated with neurodevelopmental disorders such as autism and schizophrenia.
机译:神经元振荡包括基本机制,遥远的神经结构建立并表达功能性连接。海马和其他前脑之间的远程功能连接通过Theta振荡使能。在这里,我们首次展示婴儿大鼠红色核(RN)-A脑干传感器结构 - 表现出θ(4-7Hz)振荡主要限制在活性(REM)睡眠时段。在产后第8天(P8),θ表示为肌阵挛抽搐后立即短暂爆发;通过P12,在积极睡眠中持续表达θ振荡。 P12的Hippocampus和RN的同时录像表明,在主动睡眠期间,两个结构中的θ振荡都是相干,共调制和相互交互的。批判性地,在P12,内侧隔膜的失活消除了两个结构中的θ。海马与rn平行区之间的依赖性功能耦合的发育出现,在海马和前额叶皮质之间。因此,Theta早期表达的破坏可以利于与神经发育疾病(如自闭症和精神分裂症相关)相关的认知和感官电池缺陷。

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