楔前叶/后扣带皮层在静息态功能网络中起关键节点作用的研究进展

Progress of the research on the role of key node of precuneus/posterior cingulated cortex in default brain functional network

已有文献报道指出一些脑区能够组成默认脑功能网络。不同的实验任务显示楔前叶/后扣带皮层与其他节点之间有更强的相互作用。功能连接分析发现楔前叶/后扣带皮层是默认脑功能网络中的一个关键区域。静息态默认脑功能网络是无尺度网络,具有小世界特性,楔前叶/后扣带皮层可能是该默认脑功能网络中一个重要的"集散节点"。

Previous studies have revealed that several regions of the brain constitute the default brain functional network.Many different tasks show that the precuneus/posterior cingulated cortex has a high degree interaction with other nodes than rest of the network.Evidence from the functional connectivity studies suggests that the precuneus/posterior cingulated cortex plays an important role in the default brain functional network.Analysis of the default brain functional network in different tasks shows that the brain functional network is scale-free with the properties of small world.From this point,the precuneus/posterior cingulated cortex maybe one of the key-node of the default brain function network.