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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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Cytoskeletal Coordination in Cell Migration01:32

Cytoskeletal Coordination in Cell Migration

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A migrating cell changes its shape during the cyclic events of attachment and detachment from the substratum and repositions the cell organelles correspondingly. These complex events are orchestrated by the dynamic cytoskeletal network comprising actin filaments, intermediate filaments, and microtubules. Cytoskeletal crosstalk — the direct and indirect communication between the different components — is crucial for this coordination. Direct communication involves various linker...
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Indirect Motor Pathways01:22

Indirect Motor Pathways

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The indirect motor or extrapyramidal pathways originate in the brainstem, the lower portion of the brain that connects it to the spinal cord. They consist of several distinct tracts, each with specialized functions. The four main tracts of the indirect motor pathways are the vestibulospinal tract, the reticulospinal tract, the tectospinal tract, and the rubrospinal tract.
The vestibulospinal tract originates in the vestibular nuclei of the brainstem. The vestibular system detects changes in...
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相关实验视频

Updated: Jun 26, 2025

3D Kinematic Gait Analysis for Preclinical Studies in Rodents
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3D Kinematic Gait Analysis for Preclinical Studies in Rodents

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研究人类行走中的跨细分协调模式.

Vaibhavsingh Varma1, Mitja Trkov1

  • 1Department of Mechanical Engineering, Rowan University, Glassboro, NJ 08028, USA.

Gait & posture
|May 15, 2024
PubMed
概括

步行速度显著影响下肢跨段协调指标,这些指标对于人类稳定的运动至关重要. 年龄,BMI和身高与这些步行特征的相关性很小.

科学领域:

  • 生物力学 生物力学
  • 人类的机动运动
  • 机器人技术 机器人技术 机器人技术

背景情况:

  • 腿部,腿部和脚部的跨段协调对于人类稳定和高效的行走至关重要.
  • 在步行过程中,四肢的升高角度遵循一个平面分流体,由平面共变定律描述.

研究的目的:

  • 调查步行速度,年龄,BMI和身高如何影响分段间协调多重管和协变平面的尺寸和方向.
  • 引入新的指标来量化人类行走过程中的跨细分协调.

主要方法:

  • 开发了新的指标:多元体的平均半径,多元体的旋转和平面方向.
  • 分析了19-67岁的公开数据集,以0.18到2.3米/秒的速度行走.
  • 使用t测试,ANOVA和回归分析来评估与速度,性别和人口统计学方面的指标相关性.

主要成果:

  • 步行速度与计算的跨细分协调指标有很强的相关性.
  • 年龄,BMI和身高与这些步行指标的相关性是微不足道的.
  • 没有观察到基于性别的显著差异;指标随着步行速度的增加而增加.

结论:

  • 引入了与步行速度相关的下肢间隔协调 (ISC) 的可量化的指标和回归模型.
关键词:
人类的机动运动.跨部门协调协调工作.肢体的升高角度平面共变定律 平面共变定律步行方式 步行方式

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  • 这些发现可以增强临床步态分析,并为辅助设备 (如假肢和康复机器人) 的设计提供信息.
  • 该研究提供了复制自然步行的工具,并改善生物机械设备的功能.