人类大脑中皮层-皮下相互作用的切换模式
Alessandro Nazzi1, Chiara Favaretto2, Antonino Vallesi1,2
1Padova Neuroscience Center, University of Padova, Padova 35129, Italy.
概括
在自发活动期间,皮质下大脑区域与皮质进行动态交互. 这些同步波动揭示了涉及边缘和皮质下核的独特网络状态,挑战了对大脑功能的皮质中心观点.
科学领域:
- 神经科学是一个神经科学.
- 脑部成像 脑部成像
- 系统神经科学 系统神经科学
背景情况:
- 自发的大脑活动对神经功能至关重要,但皮质下贡献仍然不清楚.
- 一个"皮质中心偏差"往往导致孤立地分析皮质活动.
- 了解皮层-皮下相互作用对于全面的脑动态模型至关重要.
研究的目的:
- 为了研究皮层和皮下结构之间的动态功能连接 (FC).
- 确定皮层下区域如何影响自发大脑活动模式.
- 通过在全脑分析中包括皮质下结构来挑战"皮质中心偏差".
主要方法:
- 动态功能连接 (FC) 分析.
- 利用来自大量健康人群的数据 (人类连接组项目).
- 研究了皮层和皮下活动的同步波动.
主要成果:
- 皮层和皮层下FC转移是同步的.
- 边缘区域 (海马体,杏仁体) 和皮下细胞核 (甲状腺,基底腺) 与皮层网络具有灵活的合.
- 确定了两个反复出现的FC状态:边缘默认模式网络和边缘传感运动网络合,与质体/基底的对立模式.
结论:
- 皮层-皮下相互作用显著塑造了自发的全脑FC模式.
- 下皮层在大规模的自发大脑活动中发挥着关键作用.
- 未来的研究应该整合下皮层结构,以完全理解大脑动态.
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