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在双手力控制中,前运动和辅助运动区域的动态参与
Anke Ninija Karabanov1, Gaetana Chillemi2, Kristoffer Hougaard Madsen3
1Department of Nutrition, Exercise, and Sports, Faculty of Science, University of Copenhagen, Denmark; Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Amager and Hvidovre, Hvidovre, Denmark.
NeuroImage
|June 4, 2023
概括
这项研究揭示了大脑如何协调复杂的双手动作. 背部前运动皮质和补充运动区域 (SMA) 之间的合增加对于动态的,不对称的运动至关重要.
科学领域:
- 神经科学是一个神经科学.
- 发动机控制器 发动机控制器
- 认知神经科学 认知神经科学
背景情况:
- 日常活动往往需要在对称和不对称的双手动作之间快速过渡.
- 以前对双手电机控制的研究主要集中在连续的,重复的任务上,忽视了电机输出中的动态变化.
- 了解灵活的双手协调背后的神经机制是必不可少的.
研究的目的:
- 在双手力控制期间,绘制前运动和运动区域的功能活动和连接.
- 为了研究镜像对称和反向不对称双手任务之间的神经差异.
- 阐明特定大脑区域在调解复杂的双人协调中的作用.
主要方法:
- 在健康的志愿者中使用功能磁共振成像 (fMRI).
- 参与者执行了一个视觉指导的双手力任务,并进行离散力调整.
- 任务涉及手之间的镜像对称或反向不对称协调.
主要成果:
- 在反向不对称的任务中,双边背部前运动皮层表现出更高的活动和更强的合与侧补充运动区域 (SMA).
- 在不对称的背景下,SMA显示出与视觉区域的负合增加.
- 左尾部SMA集群中的活动与双边力量调整的同步启动有正相关,独立于任务类型.
结论:
- 背前运动皮质通过加强与SMA的合,在管理双人协调中增加的复杂性方面发挥着关键作用.
- 似乎SMA提供了关于运动行为的感觉反.
- 这些发现提升了我们对动态双手运动控制的神经基础的理解.
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