功能性MRI连接可以指数动态神经通信和认知吗?
Sonsoles Alonso1, Alberto Llera2, Diego Vidaurre3
1Center for Functionally Integrative Neuroscience, Department of Clinical Medicine, Aarhus University, Denmark; Department of Applied Mathematics and Computer Science, Technical University of Denmark, Denmark.
Biological psychology
|June 22, 2025
概括
动态功能连接 (FC) 显示了与认知相关的结构化,复杂的模式. 这些大脑活动模式满足了在休息和任务期间反映神经通信的关键要求.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 计算神经科学是一种神经科学.
背景情况:
- 神经通信需要灵活而结构化的动力学来进行认知和行为.
- 全脑功能连接 (FC) 模式随着时间的推移而变化,但它们与认知的相关性仍在争论中.
- 目前尚不清楚观察到的FC模式是否反映了实际的神经通信或恒常过程.
研究的目的:
- 调查时间变化的功能连接 (FC) 是否反映了动态的,与认知相关的神经通信.
- 确定FC是否符合索引认知过程的特定标准:时间复杂性,行为适应性和时间尺度兼容性.
- 使用fMRI数据建模和描述时间变化的FC.
主要方法:
- 在人类连接体项目fMRI数据上训练了多个时间变化的FC模型.
- 在三个条件下分析数据:休息,工作记忆任务和运动任务.
- 使用主要组件分析描述了FC动态.
主要成果:
- 时间变化的FC表现出低维,多维的轨迹.
- 这些FC轨迹可以可靠地测量.
- 观察到的FC动态满足了反映与认知相关的神经通信的建议要求.
结论:
- 时间变化的FC展示了结构化,动态的轨迹,满足索引认知的必要条件.
- 虽然不够,但这些发现表明,时间变化的FC可能反映了认知功能的基础神经通信的关键方面.
- 需要进一步的研究来证实时间变化的FC作为认知过程的直接衡量标准的充分性.
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