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相关概念视频

Reflex Activity01:08

Reflex Activity

1.7K
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...
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Ankle Joint01:10

Ankle Joint

1.6K
The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...
1.6K
Somatic Spinal Reflexes01:22

Somatic Spinal Reflexes

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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...
2.1K

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Reflexive and Perceptual Characteristics as Functional Outcome Measures of Chronic Ankle Instability.

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相关实验视频

Updated: Jul 10, 2025

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
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Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Published on: September 18, 2020

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在步行过程中感知到脚不稳定性和皮肤反射调节.

Annalee M H Friedman1, Leif P Madsen1

  • 1Indiana University, Bloomington, Indiana, USA.

Physiological reports
|November 23, 2023
PubMed
概括

走路时皮肤反射的变化可能预测慢性脚不稳定 (CAI) 患者的脚不稳定性. 更可变的反射与更高的不稳定性相关,这表明潜在的康复结果措施.

科学领域:

  • 神经肌肉控制控制神经肌肉控制
  • 运动学习是指运动学习.
  • 生物力学 生物力学

背景情况:

  • 皮肤反射有助于走路的稳定性,通过尽量减少因干扰而导致的跌倒.
  • 与健康个体相比,患有慢性脚不稳定 (CAI) 的个体表现出改变的反射模式.
  • 假设这些变化源于CAI的感知不稳定性.

研究的目的:

  • 调查皮肤反射变化和大小是否预测CAI患者在步行过程中感知到的不稳定性.
  • 探索外围神经刺激引起的反射和主观不稳定性评级之间的关系.

主要方法:

  • 40名患有CAI的参与者在接受随机外围神经刺激的同时走路.
  • 表面电肌图记录了下腿肌肉活动,以计算中间延迟反射.
  • 分层后勤回归分析了反射特征和感知不稳定性之间的关系.

主要成果:

  • 在长肌和侧腹腹肌肌的反射变异性和在中间位置感知到的不稳定性之间发现了积极的关联.
  • 一致的反射与较低的感知不稳定性有关,可能是由于已发展的感知期望.
  • 可变的运动输出与在脊柱上层的更高的感知不稳定性相关.

结论:

关键词:
慢性脚不稳定 脚不稳定皮肤上的反射反应.感知到的不稳定性

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Experimental Methods to Study Human Postural Control
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Experimental Methods to Study Human Postural Control

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A Human-machine-interface Integrating Low-cost Sensors with a Neuromuscular Electrical Stimulation System for Post-stroke Balance Rehabilitation

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相关实验视频

Last Updated: Jul 10, 2025

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
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Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

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Experimental Methods to Study Human Postural Control
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Experimental Methods to Study Human Postural Control

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A Human-machine-interface Integrating Low-cost Sensors with a Neuromuscular Electrical Stimulation System for Post-stroke Balance Rehabilitation
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  • 步行过程中的皮肤反射变化可能作为CAI康复中神经肌肉恢复的客观指标.
  • 反射变化可能是未来侧脚扭伤的预测指标.
  • 了解反射调制提供了关于CAI运动控制缺陷的见解.