青少年集中注意力对呼吸的动态功能连接特征
Isaac N Treves1,2, Aaron K Kucyi3, Anna O Tierney4,5
1McGovern Institute for Brain Research, Building 46, 43 Vassar Street, Massachusetts Institute of Technology, Cambridge, MA 02139, United States.
Cerebral cortex (New York, N.Y. : 1991)
|February 25, 2025
概括
呼吸冥想期间的思维游荡与大脑网络变化有关. 功能连接分析揭示了与集中注意力与休息相关的不同大脑状态.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 心理学 心理学 心理学
背景情况:
- 呼吸冥想包括专注于呼吸和思维游荡.
- 呼吸注意力和大规模网络相互作用的神经机制尚未完全理解.
- 功能磁共振成像 (fMRI) 提供了对静态和动态大脑连接的见解.
研究的目的:
- 使用fMRI调查呼吸注意力的神经机制.
- 在青少年的呼吸计数任务 (BCT) 中分析静态和动态功能连接.
- 为了区分休息期间的大脑网络相互作用,在任务中和任务之外的注意力呼吸.
主要方法:
- fMRI用于分析72名青少年的静态和动态功能连接.
- 采用呼吸计数任务 (BCT),使用生理呼吸数据来识别任务中和任务之外的时间.
- 分析的重点是注意力网络中的连接性及其与默认模式网络 (DMN) 的关系.
主要成果:
- 在BCT期间,与休息期间相比,在注意方向和定向网络中观察到静态连接性增加.
- 在BCT期间发现了注意力网络和DMN之间的反相关性.
- 动态连接分析揭示了四种不同的大脑状态,在BCT期间,DMN抗相关状态更为普遍.
结论:
- 在BCT中,不同的大脑状态将呼吸任务与休息区分开来,并将任务中的注意力与非任务的注意力区分开来.
- 该研究确定了呼吸注意力和思维漂泊的神经标志物.
- 在这项分析中,没有发现反映个体间行为变异的脑部状态.
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