关闭和集体相位肌肉调以指向方向:机器学习的见解
Florian Chambellant1, Jeremie Gaveau1, Charalambos Papaxanthis1
1Université de Bourgogne, INSERMU1093, France.
Heliyon
|July 25, 2024
概括
机器学习显示,手臂运动以模块化方式调整,特定的肌肉群发挥关键作用. 这种调整优化了重力,并在指向方向的任务中最大限度地减少了肌肉的努力.
科学领域:
- 神经科学是一个神经科学.
- 生物力学 生物力学
- 发动机控制器的控制器
背景情况:
- 手臂运动需要根据速度和方向等环境因素不断调整.
- 以前的研究表明,最佳调整手臂运动动力学,以利用重力和尽量减少肌肉的努力.
研究的目的:
- 通过使用机器学习 (ML) 来研究手臂运动期间的肌肉调整.
- 分析集体肌肉活动,并在指针任务中识别集体肌肉活动的模式.
主要方法:
- 利用ML技术,特别是线性差异分析 (LDA) 和支向量机 (SVM),分析多肌肉活动.
- 在指向不同方向的运动中记录了集体肌肉活动.
主要成果:
- 证明了手臂运动的定向调整以模块化的方式发生,而不是统一地.
- 确定反重力肌肉比重力肌肉更精细地调整着指向方向.
- 表明肌肉失活和负电肌图 (EMG) 阶段的持续时间与指向方向调节.
结论:
- 运动系统调整肌肉命令,以利用重力并减少劳动力.
- 阶段性EMG阴性是手臂运动期间肌肉控制的关键组成部分.
- 在计算上,LDA是用于运动控制研究的廉价和可行的工具.
相关概念视频
Classification of Skeletal Muscle Fibers
Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions.
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
Muscle Contraction
Classification of Skeletal Muscle Relaxants
Skeletal muscle relaxants are a group of drugs that can reduce muscle stiffness and induce temporary paralysis to relieve pain. These agents can act centrally to reduce muscle tone or spasms in painful conditions such as multiple sclerosis (MS), amyotrophic lateral sclerosis (ALS), or spinal injuries; they are called antispasmodics or spasmolytics.
Peripherally acting skeletal muscle relaxants interfere with the neurotransmission at the neuromuscular end plate to induce paralysis during...
Peripherally acting skeletal muscle relaxants interfere with the neurotransmission at the neuromuscular end plate to induce paralysis during...
Relaxation of Skeletal Muscles
The period of muscle contraction primarily influences the duration of stimulation at the neuromuscular junction (NMJ), the presence of free calcium ions in the sarcoplasm, and the availability of energy or ATP to support contractions.
When an action potential reaches the axon terminal, it depolarizes the membrane and opens voltage-gated sodium channels. Sodium ions enter the cell, further depolarizing the presynaptic membrane. This depolarization causes voltage-gated calcium channels to open.
When an action potential reaches the axon terminal, it depolarizes the membrane and opens voltage-gated sodium channels. Sodium ions enter the cell, further depolarizing the presynaptic membrane. This depolarization causes voltage-gated calcium channels to open.


