Effects of Anesthesia on Effective Connectivity in the Brain
Effects of Anesthesia on Effective Connectivity in the Brain
复制标题
麻醉对大脑有效连接的影响
DOI：
10.4236/wjns.2015.52012
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发表时间：
2015-03
期刊：
影响因子：
--
通讯作者：
Xin Tian
中科院分区：
文献类型：
--
作者：
Xinyu Xu;Guolin Wang;Xin Tian
大脑构成了一个极其复杂的结构网络。有三种主要类型的连接用于描述神经元网络，这反映了三个平行的研究水平：解剖连接，功能连接和有效连接。有效连接性表示一个节点对另一个节点的直接影响，在神经元回路的背景下，两个节点的活动之间存在因果关系。自定义以来，有效的连通性分析已被用于描述PET成像，fMRI，脑电图（EEG）和脑磁图（MEG），单单位和局部场电位的多个空间尺度上的因果关系。在过去的二十年里，有各种各样的文献使用有效的连接分析来探测麻醉状态。麻醉状态下有效连接的检查与麻醉学家和神经科学家都相关，因为它有可能阐明尚不清楚的麻醉机制，同时提供对大脑内在功能活动的洞察。本综述试图检查，阐明，并整合的洞察力，有效的连接分析麻醉状态迄今已产生。
The brain constitutes a formidably complicated structural network. There are three main types of connectivity used to describe neuronal networks, which reflect three parallel levels of investigation: anatomical connectivity, functional connectivity and effective connectivity. Effective connectivity indicates the direct influence that a node exerts on another, and in the context of neuronal circuits, a causal relationship between the activities of two nodes. Since its definition, effective connectivity analysis has been used to describe causal relationship across multiple spatial scales in PET imaging, fMRI, electroencephalography (EEG) and magnetoencephalography (MEG), single-unit, and local field potential. There are diverse literatures which probe the anesthetized state using effective connectivity analysis over the past two decades. The examination of effective connectivity in the anesthetized state is of relevance to both anesthesiologists and neuroscientists, as it has the potential to elucidate still unclear mechanisms of anesthesia while offering insight into intrinsic functional activity in the brain. The present review attempts to examine, elucidate, and integrate the insight that effective connectivity analysis of the anesthetized state has generated thus far.
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