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Cerebral Hemispheres01:05

Cerebral Hemispheres

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The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...
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Lateralization01:28

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Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
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相关实验视频

Updated: Jun 4, 2025

Surface Electromyographic Biofeedback as a Rehabilitation Tool for Patients with Global Brachial Plexus Injury Receiving Bionic Reconstruction
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在经过生物重建后的创伤性手臂病中减少了半球间连接.

Galia V Anguelova1, Agnes Sturma2, Oskar Aszmann3

  • 1Department of Neurology, Haaglanden Medical Centre, The Hague, the Netherlands.

NeuroImage
|December 30, 2024
PubMed
概括

创伤性臂病变 (TBPL) 患者表现出大脑活动和连接性的改变. 生物手的重建可以通过影响这些神经变化来帮助恢复功能.

关键词:
生物手是生物手.皮层激活活动运动任务 运动任务假肢 假肢是一种假肢.创伤性手臂损伤损伤功能磁力共振成像 (fMRI) 是一种

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科学领域:

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

背景情况:

  • 创伤性臂病变 (TBPL) 可以导致持久的手部功能障碍.
  • 仿生假肢在严重情况下提供了一种解决方案,可以恢复抓功能.
  • 了解TBPL后的神经适应和生物重建对于优化治疗至关重要.

研究的目的:

  • 调查TBPL患者的 (下) 皮层运动活动和功能连接性的变化.
  • 为了比较TBPL患者与没有生物手重建之间的神经活动.
  • 探索神经变化和功能恢复之间的关系.

主要方法:

  • 功能性MRI (fMRI) 用于测量手动执行和成像期间的皮质活动.
  • 扩散张力成像 (DTI) 分析了白质的结构连接性.
  • 评估皮层厚度,并评估功能连接性.

主要成果:

  • 患有TBPL的患者在受影响和未受影响的手臂的运动区域中表现出增加和更广泛的皮质活动.
  • 患者表现出改变的半球间和皮质体内功能连接.
  • 在TBPL患者中观察到结构连接性降低,在那些有假肢和没有假肢的人之间有不同的模式.

结论:

  • 在TBPL患者中皮质活动和连接性增加可能代表神经损伤的补偿机制.
  • 仿生重建似乎影响神经可塑性,可能有助于功能恢复.
  • 早些时候的生物修复可能会通过利用这些神经适应来使选择的TBPL患者受益.