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相关概念视频

Vibrating Concrete01:19

Vibrating Concrete

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Mechanical vibrators are instrumental in compacting newly poured concrete within formwork and around reinforcements. This process is essential to eliminate trapped air pockets and establish a dense concrete mass. One widely used method is vibrating by internal vibrators, often referred to as a poker vibrator or immersion vibrator. It is rapidly inserted through the full depth of the freshly laid concrete and slightly extends into the layer below it (which remains in a plastic state). Consistent...
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The Vestibular System01:29

The Vestibular System

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The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.
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Motor Unit Stimulation01:20

Motor Unit Stimulation

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When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
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Torsional Pendulum01:09

Torsional Pendulum

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A torsional pendulum involves the oscillation of a rigid body in which the restoring force is provided by the torsion in the string from which the rigid body is suspended. Ideally, the string should be massless; practically, its mass is much smaller than the rigid body's mass and is neglected.
As long as the rigid body's angular displacement is small, its oscillation can be modeled as a linear angular oscillation. The amplitude of the oscillation is an angle. The role of mass is played...
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Muscle Stimulation Frequency01:22

Muscle Stimulation Frequency

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The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
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Simple Harmonic Motion01:21

Simple Harmonic Motion

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Simple harmonic motion is the name given to oscillatory motion for a system where the net force can be described by Hooke's law. If the net force can be described by Hooke's law and there is no damping (by friction or other non-conservative forces), then a simple harmonic oscillator will oscillate with equal displacement on either side of the equilibrium position. To derive an equation for period and frequency, the equation of motion is used. The period of a simple harmonic oscillator is given...
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相关实验视频

Updated: Jan 13, 2026

A Vibrotactile Feedback Device for Seated Balance Assessment and Training
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创新的紧型振动系统与自定义的GUI,用于调节使用个性化振动参数调节干部 proprioception.

Debdyuti Mandal1, John R Gilliam2,3, Sheri P Silfies4

  • 1Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA 90089, USA.

Bioengineering (Basel, Switzerland)
|October 29, 2025
PubMed
概括

这项研究介绍了一种可定制的振动系统,用于自身感知研究. 这种新的系统允许灵活调整频率和振幅,改善动感错觉,并在个体中建模干部自感受障碍.

关键词:
执行器执行器的执行器动感幻觉是一种动感幻觉.自己的感觉 (proprioception) 是一种感觉.脊椎损伤是指脊椎损伤的发生.振动系统的振动系统

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相关实验视频

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科学领域:

  • 生物医学工程 生物医学工程
  • 神经科学是一个神经科学.
  • 康复科学 康复科学 康复科学

背景情况:

  • 传统的振动系统缺乏个性化的频率和振幅控制,限制了动感幻觉的有效性.
  • 干自身感知障碍是腰部疼痛的一个重要因素,是全球残疾的主要原因.
  • 现有的自感研究经常使用固定的参数,未能考虑响应的个体变化.

研究的目的:

  • 开发和评估一种具有可适应频率和振幅的新型振动系统,用于自觉调制.
  • 调查该系统模拟干部自感受障碍的能力,特别是在腰部疼痛的背景下.
  • 为了证明定制振动参数的可行性,以最大限度的个人自觉缺陷.

主要方法:

  • 开发一个定制的振动系统,具有灵活的频率和振幅范围,通过图形用户界面 (GUI) 控制.
  • 集成小型,可穿戴的线性执行器,用于在没有限制带的情况下固定主题.
  • 应用该系统来操纵五个人类受试者的干部自知觉.

主要成果:

  • 开发的系统成功地调节了受试者的干部自知觉.
  • 可定制的频率和振幅参数被证明对于引起最大自感缺陷至关重要.
  • 该系统证明了其在模拟干部自感受障碍方面的可行性.

结论:

  • 定制的振动系统为自身感知研究提供了一个灵活和可适应的平台.
  • 个性化参数调整是有效诱导动感错觉和研究自身感知缺陷的关键.
  • 这项技术对了解和潜在地治疗诸如与干部控制受损相关的腰部疼痛等疾病具有前景.