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相关概念视频

Somatic Spinal Reflexes01:22

Somatic Spinal Reflexes

2.2K
Somatic spinal reflexes are rapid, involuntary muscular responses to external stimuli that involve the somatic musculature and the spinal cord.
One of the most well-known somatic spinal reflexes is the stretch reflex, which is activated by the sudden stretching of a muscle. This reflex involves the activation of specialized sensory receptors called muscle spindles, which are located in the muscle tissue and detect changes in the length and speed of muscle contractions. When a muscle is suddenly...
2.2K
Reflex Activity01:08

Reflex Activity

1.8K
A reflex activity is an automatic, involuntary response to specific stimuli. It is a part of our survival mechanism, designed to protect us from potential harm. For example, when a bright light suddenly shines into our eyes, we instinctively close them or look away. This is a simple reflex activity orchestrated by the nervous system without conscious thought or effort.
A reflex exam is a diagnostic procedure performed by a healthcare professional to evaluate the functionality of a patient's...
1.8K
Indirect Motor Pathways01:22

Indirect Motor Pathways

1.6K
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...
1.6K
Spinal Cord: Information Processing01:10

Spinal Cord: Information Processing

1.4K
The spinal cord is an integral hub for motor and sensory information that enables the brain to communicate with the peripheral nervous system (PNS). This communication consists of relaying sensory data and transmission of motor commands.
Sensory Information Processing
Sensory information processing begins at the sensory receptors located in the skin and other tissues, which detect somatic sensory stimuli such as touch, temperature, or pain. These receptors function as catalysts, initiating...
1.4K
Spinal Cord01:26

Spinal Cord

519
The spinal cord, a critical component of the central nervous system, extends from the base of the brainstem to the lumbar region of the vertebral column. It is essential for maintaining physical stability and facilitating communication between the brain and peripheral parts of the body.
519

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相关实验视频

Updated: Jul 16, 2025

Using a Split-belt Treadmill to Evaluate Generalization of Human Locomotor Adaptation
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Using a Split-belt Treadmill to Evaluate Generalization of Human Locomotor Adaptation

Published on: August 23, 2017

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运动运动适应过程中的动态脊柱反射适应.

Omar Refy1,2,3, Belle Blanchard4, Abigail Miller-Peterson4,5

  • 1Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States.

Journal of neurophysiology
|September 13, 2023
PubMed
概括

脊柱反射增益在分裂带行走适应过程中发生变化,显示出快速的单边调制,纠正腿部不对称性. 这种调制,很可能来自脊柱上中心,是适应步行的关键.

关键词:
这是一种H反射.人类的步态是人类的步态机车运动 机车运动机动运动适应 机动运动适应脊柱反射是一种反射.

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Methods to Quantify Pharmacologically Induced Alterations in Motor Function in Human Incomplete SCI
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Methods to Quantify Pharmacologically Induced Alterations in Motor Function in Human Incomplete SCI

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Studying the Neural Basis of Adaptive Locomotor Behavior in Insects
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Studying the Neural Basis of Adaptive Locomotor Behavior in Insects

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相关实验视频

Last Updated: Jul 16, 2025

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科学领域:

  • 神经科学是一个神经科学.
  • 发动机控制器的控制器
  • 生物力学 生物力学

背景情况:

  • 运动适应涉及复杂的脊柱和脊柱上相互作用.
  • 脊柱反射在适应步态与不对称条件中的确切作用尚未完全理解.

研究的目的:

  • 为了研究在分裂带运动适应过程中脊柱反射收益的变化.
  • 探索脊柱反射调制和步态不对称性纠正之间的关系.

主要方法:

  • 利用霍夫曼反射测量来评估脊柱反射的增加.
  • 在初始和重复的分腰带行走暴露期间分析了反射调制模式.
  • 相关反射增益调制与腿部不对称度的测量.

主要成果:

  • 在分裂皮带适应过程中,证明了脊柱反射收益的动态调节.
  • 观察到快速的,单边的反射抑制或促进,与速度变化相对侧面,随后恢复缓慢.
  • 表明反射调制与腿部不对称性纠正有很强的相关性,不仅仅是由于速度变化.

结论:

  • 脊柱反射调节是分裂带运动适应的一个组成部分.
  • 反射调节很可能来自于脊柱上部,可以单方面控制.
  • 建议反射调制作为适应健康个体步态不对称的潜在机制.