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相关概念视频

Major Somatic Sensory Pathways01:28

Major Somatic Sensory Pathways

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Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
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Spinal Cord: Cross-sectional Anatomy01:16

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The cross-sectional anatomy of the spinal cord offers a detailed view of its complex structure and function within the central nervous system. At the core of the spinal cord lies the gray matter, characterized by its butterfly or "H"-shaped appearance in cross-section. This central region is enveloped by white matter, with the overall structure divided into symmetrical halves by the dorsal median sulcus and the ventral median fissure.
Gray Matter and its Components
Central to the gray matter is...
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相关实验视频

Updated: Jun 13, 2025

A Simple Non-invasive Method for Temporary Knockdown of Upper Limb Proprioception
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白质的断开会影响中风后的自身感受.

Matthew Chilvers1,2, Trevor Low1,2, Deepthi Rajashekar1,2

  • 1Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.

PloS one
|September 12, 2024
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概括
此摘要是机器生成的。

卒中幸存者经常经历自身感知障碍. 这项研究表明,对特定白质道的损伤,包括上纵和弧形,显著影响了中风后的手臂位置匹配性能.

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Author Spotlight: Using the MouseWalker to Quantify Locomotor Dysfunction in a Mouse Model of Spinal Cord Injury
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科学领域:

  • 神经科学是一个神经科学.
  • 神经康复疗法 神经康复疗法
  • 白色物质通过白色物质的轨迹.

背景情况:

  • 自身感知障碍影响50-64%的中风幸存者.
  • 了解白质在中风后自身感受中的作用是有限的.
  • 行为缺陷往往源于大脑网络断开的连接.

研究的目的:

  • 调查中风后与自身感知缺陷相关的白质脱节.
  • 为了识别与手臂位置匹配受损相关的特定白质道.

主要方法:

  • 评估了203名中风幸存者的机器人手臂位置匹配 (APM) 任务上的白质病变负荷和性能.
  • 使用神经成像和机器人评估,大约在中风后2周.
  • 研究了APM障碍和没有APM障碍的参与者之间的脱节差异.

主要成果:

  • 上部纵向囊 (SLF II和III),弧形囊和正面岛屿通道的损伤负荷增加与较差的APM性能相关.
  • 患有APM损伤的参与者在体后部,下面的前后囊,下面的纵向囊和光学辐射中表现出额外的断裂.

结论:

  • 在中风后的自感性处理中,白质网络至关重要.
  • 除了传统途径之外,确定了关键的白质通道,参与从头顶和额头部区域传递自身感知信息.