由TMS引起的潜在传播反映了有效的大脑连接
Ian Daly1, Nitin Williams2,3, Slawomir J Nasuto4
1Brain-Computer Interfacing and Neural Engineering Laboratory, School of Computer Science and Electronic Engineering, University of Essex, Colchester, United Kingdom.
Journal of neural engineering
|December 13, 2024
概括
视觉反会影响大脑的连接. 跨磁刺激 (TMS) 唤起的潜能 (TEP) 揭示了大脑区域如何沟通的差异,提供了一种在运动控制期间绘制有效连接的新方法.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 生物医学工程 生物医学工程
背景情况:
- 认知依赖于大脑区域的通信,需要有效的连接措施.
- 跨磁刺激 (TMS) 唤起的潜力 (TEP) 是有效连接的有希望的指标,但需要进一步验证.
- 现有的有效连接的统计方法,如多变量自动回归建模,提供了一个比较的基准.
研究的目的:
- 调查TEP作为有效连接的衡量标准.
- 将基于 TEP 的有效连接措施与已建立的统计方法进行比较.
- 检查运动控制期间视觉反如何影响有效的连接.
主要方法:
- 利用了先前存在的实验数据集,比较了带有和没有视觉反的运动控制任务期间的TEP.
- 分析了TEP,以评估大脑区域通信的差异.
- 与多变量自动回归建模结果比较TEP衍生的有效连接指标.
主要成果:
- 在没有视觉反的正面和中央通道上观察到显著更多的负面TEP (40-100毫秒后TMS).
- 显著更积极的后期TEP (280-400毫秒) 出现在逆侧运动和状通道上,没有反.
- 早期的TEP变化 (N40) 显示出与定向连贯性有可靠的关系,这是连接性的统计指标.
结论:
- TEPs的组件作为有效的脑连接测量器.
- 有效的连接是一个动态的过程,受视觉反等因素的影响.
- TEP对于绘制有效连接的区域间变化有价值,特别是在电机控制环境中.
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