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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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Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions
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微重力环境影响感觉运动适应及其神经相关物.

G D Tays1, K E Hupfeld1, H R McGregor1

  • 1Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, United States.

Cerebral cortex (New York, N.Y. : 1991)
|January 5, 2025
PubMed
概括

微重力不会改变宇航员的短期感觉运动适应能力. 然而,它影响了脱适应,神经活动需要长达90天才能在飞行后恢复正常.

关键词:
大脑的变化大脑的变化在微重力环境中,微重力传感器运动适应的适应太空飞行 太空飞行 太空飞行

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科学领域:

  • 空间生理学 空间生理学
  • 神经科学是一个神经科学.
  • 人类的适应能力

背景情况:

  • 微重力在返回地球时会引起感觉运动变化.
  • 微重力对飞行中的行为影响的理解较少.
  • 研究在微重力环境中适应感官冲突至关重要.

研究的目的:

  • 为了检查微重力是否会破坏感觉运动适应.
  • 评估空间适应性资源的竞争.
  • 评估与感觉运动适应相关的功能性大脑变化.

主要方法:

  • 在飞行前,飞行期间和飞行后评估了感觉运动适应能力.
  • 功能性大脑变化被评估使用MRI飞行前后.
  • 宇航员 (n=13) 和地球控制器 (n=13) 参与其中.

主要成果:

  • 宇航员在飞行前,飞行期间或飞行后的适应性没有变化.
  • 在宇航员登机时观察到更大的感觉运动适应后效应.
  • 在宇航员飞行后90天内,大脑活动的增加持续了多达90天.

结论:

  • 微重力不会改变短期视觉运动适应.
  • 微重力会影响感觉运动的不适应.
  • 飞行后感应运动神经激活需要长达90天才能正常化.