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相关概念视频

Hierarchy of Motor Control01:18

Hierarchy of Motor Control

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The hierarchy of motor control refers to the different levels of organization and processing involved in controlling movement in the body. These levels range from higher cortical areas involved in planning and decision-making to lower spinal cord reflexes that respond automatically to external stimuli.
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Force and Position Control in Humans - The Role of Augmented Feedback
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老年人视觉信息处理:力量控制和运动单元池调制

MinHyuk Kwon1,2, Evangelos A Christou2

  • 1Department of Kinesiology and Health Promotion, California State Polytechnic University, Pomona, CA, USA.

Journal of motor behavior
|December 28, 2023
PubMed
概括

年长的成年人表现出更多视觉信息的强力变化,与运动神经元池激活变化有关. 这突显了视觉反如何影响老年人群的运动控制.

科学领域:

  • 发动机控制器 发动机控制器
  • 神经科学是一个神经科学.
  • 人类衰老研究研究.

背景情况:

  • 增加视觉信息可能会对力量控制产生负面影响,特别是在老年人中.
  • 视觉反对老化过程中机动单元池激活的具体影响仍未得到充分研究.

研究的目的:

  • 研究视觉反如何影响老年人的运动神经元池激活和力量控制,与年轻人相比.
  • 在不同的视觉条件下识别与年龄相关的运动控制差异背后的神经机制.

主要方法:

  • 十五名老年人和十五名年轻人进行了下最大脚背部屈曲力任务.
  • 视觉反收益在低 (0.05°) 和高 (1.2°) 条件之间被操纵.
  • 评估了动力单元池激活和力变异性.

主要成果:

  • 老年人表现出明显更大的力变化,特别是在高增益视觉反下.
  • 这种增加的变化与10-35赫兹频率范围内的多个电机单元的调制有关.
  • 在单个发动机单元活动中没有观察到任何显著变化.

结论:

  • 高增益视觉反放大了老年人的力量变化.
关键词:
老化的老化 衰老的老化控制力量控制力量的力量.发动机单位 发动机单位视觉反 视觉反是指视觉上的反.

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  • 这种放大与运动神经元池内的激活增加有关,特别是在10-35赫兹范围内.
  • 研究结果表明,与年龄相关的运动控制下降与视觉需求增加的神经基础.