内源预备控制与默认模式和背部注意网络之间的相互作用增加有关
Max K Egan1,2, Cyril Costines3, Mark D'Esposito3
1University of Illinois at Urbana-Champaign, Champaign, IL, United States.
Imaging neuroscience (Cambridge, Mass.)
|August 13, 2025
概括
认知控制依赖于大脑网络相互作用. 内生驱动的准备控制,特别是当 cued,加强了默认模式网络 (DMN) 和注意力网络之间的连接.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 认知控制研究研究 认知控制研究
背景情况:
- 认知控制涉及大规模的大脑网络,主要是在额头和头顶区域.
- 虽然已知个体网络功能,但对认知控制的跨网络相互作用仍然不清楚.
- 认知控制包括直接调节和准备过程,通常是内部 (内生) 驱动的.
研究的目的:
- 为了研究支持内源驱动的预备性认知控制的大脑网络相互作用.
- 为了区分准备性控制与即时控制机制.
- 探索默认模式网络 (DMN) 在内部驱动准备中的作用.
主要方法:
- 功能磁共振成像 (fMRI) 用于25名参与者在一个感知决策任务.
- 一个有线与未有线试验范式操纵了对内源性准备性控制的需求.
- 分析的重点是未经试验 (准备) 和试验前的试验间期.
主要成果:
- 行为数据表明,在未经激活的条件下,认知控制需求更高.
- 内源性准备性控制与背部注意力网络 (DAN) 活动增加相关.
- 跨网络交互,特别是默认模式网络 (DMN) 和DAN之间的交互,在内源性准备过程中得到了增强.
结论:
- 跨网络交互对于内源驱动的准备性认知控制至关重要.
- 默认模式网络 (DMN) 可能在内部调动用于认知控制的资源方面发挥作用.
- 这表明DMN的功能扩展到在没有外部线索的情况下为认知任务做准备.
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