在语义控制中,下部,中部,前部和后部皮层之间的功能差异化和相互作用
Jiaxuan Liu1, Xiuyi Wang2,3, Hanqing Zhang1
1Key Laboratory of Brain, Cognition and Education Sciences, Ministry of Education, China: Institute for Brain Research and Rehabilitation, South China Normal University, Guangzhou, China.
Communications biology
|December 11, 2025
概括
这项研究揭示了大脑如何获取知识. 结合脑部成像和刺激,它显示特定的额头和部区域共同进行语义控制,前部处理困难的任务.
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
- 认知心理学 认知心理学
背景情况:
- 语义控制对于灵活的知识检索和操纵至关重要.
- 一个左侧化的大脑网络,包括下额头环,后中环和背中介前额叶皮质,与语义控制有关.
- 这个网络中的确切的功能角色和相互作用尚未完全理解.
研究的目的:
- 研究大脑关键区域在语义控制中的因果关系和功能差异化.
- 在知识检索任务中探索这些区域之间的相互作用.
- 阐明灵活的语义处理背后的神经机制.
主要方法:
- 功能性磁共振成像 (fMRI) 和跨磁刺激 (TMS) 的组合.
- 利用机器学习进行语义性能预测分析.
- 利用动态因果建模 (DCM) 来分析网络交互.
- 应用贝叶斯多重回归来解释刺激效应.
主要成果:
- 所有三个研究的区域 (下额头环,后中环,背中前额叶皮层) 都因果地参与了语义控制.
- 前部子区域更多地参与要求的语义任务,而后部子区域显示更广泛的激活.
- 跨地区的联合活动比单个地区更好地预测语义性能.
- 语义控制需求动态调节区域自我抑制和区域间连接.
结论:
- 语义控制依赖于前额叶和叶内的分布式和交互式网络.
- 在这个网络中存在功能专业化,前部区域用于困难任务,后部区域用于一般处理.
- 任务要求灵活地改变网络动态,包括连接和自我抑制,以支持知识检索.
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