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相关概念视频

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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相关实验视频

Updated: Jul 13, 2025

Computational Modeling of Retinal Neurons for Visual Prosthesis Research - Fundamental Approaches
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一个无线神经刺激器IC用于皮层视觉假肢.

Jungho Lee1, Joseph Letner1, Jongyup Lim1

  • 1University of Michigan, Ann Arbor, MI, USA.

2023 IEEE Symposium on VLSI Technology and Circuits
|October 12, 2023
PubMed
概括

我们开发了一种微小的光学驱动装置,用于视觉皮层刺激以恢复视力. 这种能够处理1024个单元的StiMote系统在活老鼠大脑中成功测试.

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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.
  • 眼科医生 眼科 眼科

背景情况:

  • 视力障碍影响全球数百万人.
  • 目前的视觉假肢在分辨率和侵入性方面面临限制.
  • 恢复视力需要精确的神经刺激.

研究的目的:

  • 介绍一种新的,小型化的,光学驱动的模子,用于视觉皮层刺激.
  • 为了证明高密度神经刺激用于视力恢复的可行性.
  • 在生物环境中验证StiMote系统的功能.

主要方法:

  • 开发一个0.02mm3光学驱动的摩托车.
  • 一个可定位系统的设计,最多可容纳1024个字母.
  • 在活鼠模型中对StiMote系统进行体外测试.

主要成果:

  • 证实StiMote系统在光学供电时完全正常运行.
  • 在活鼠中成功实现了in-vivo视觉皮层刺激.
  • 个别地址植入的斑点被证明.

结论:

  • 开发的光学驱动摩特代表了视力恢复的有希望的技术.
  • 高密度,个别可解决的神经刺激是可以实现的.
  • 斯蒂莫特系统显示了未来在治疗失明方面的临床转化潜力.