脑膜核和皮质网络之间的渐进变化,通过刺激-响应学习
Chelsea Jarrett1, Katharina Zwosta1, Xiaoyu Wang1
1Technische Universität Dresden, Fakiltät Psychologie, Dresden, Germany.
Human brain mapping
|October 23, 2025
概括
这项研究揭示了在学习过程中大脑网络连接如何发生变化. 功能连接 (FC) 的这些转变有助于大脑从受控行动过渡到更自动的行为.
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
- 系统神经科学 系统神经科学
背景情况:
- thalamus 是一个关键的大脑结构,连接皮质和皮质下区域,对认知功能至关重要.
- 特定的乳头核具有独特的连接模式,但它们在认知网络中的作用尚未完全理解.
- 像中脊核一样,thalamic核与目标导向行为有关.
研究的目的:
- 为了研究在从受控到自动行为的过渡期间,在大脑网络内thalamic核的功能整合的变化.
- 检查在人类的学习过程中,乳头核,皮层和皮下结构之间的功能连接 (FC) 如何演变.
主要方法:
- 分析了52名健康受试者进行刺激-反应学习任务的功能磁共振成像 (fMRI) 数据.
- 对47个乳头核,38个基底/海马体子区域和12个大脑皮层区域定义了感兴趣的区域 (ROI).
- 用ROI对ROI的功能网络分析来检查与学习相关的FC变化.
主要成果:
- 学习降低了前端对象网络和更高阶的胸膜核之间的FC.
- 观察到线圈-骨管网络和脉核之间增加了FC.
- 在默认模式网络 (DMN) 和中脊核之间发现了改变的FC,同时增加了内FC和涉及膜的变化.
结论:
- 乳头核在学习和行为自动化的神经基础中发挥着重要作用.
- 涉及泰拉木斯的功能连接模式在从受控到习惯性行动的转变过程中动态适应.
- 这些发现增强了我们对 thalamocortical 和 thalamic-subcortical 在学习和行为中的相互作用的理解.
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