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相关概念视频

Neurulation01:30

Neurulation

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Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the three primary cell layers of the embryo: ectoderm, mesoderm, and endoderm. In humans, the majority of this system is formed via primary neurulation, in which the central portion of the ectoderm—originally appearing as a flat sheet of cells—folds upwards and inwards, sealing off to form a hollow neural tube. As development proceeds, the...
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Neurogenesis and Regeneration of Nervous Tissue01:15

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In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...
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Neuroplasticity01:01

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Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
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Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
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Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
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相关实验视频

Updated: Jan 10, 2026

Assessment of the Effects of Endocrine Disrupting Compounds on the Development of Vertebrate Neural Network Function Using Multi-electrode Arrays
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发育中的大脑中的周神经网络:对神经发育障碍的影响

Jennifer M Ackerman1, Thomas James L Ford2, Shraddha Shridhar Kattewar1,2

  • 1Department of Biomedical Sciences, Kent State University, Kent, OH, USA.

Molecular brain
|November 25, 2025
PubMed
概括

周神经网络 (PNNs) 对于大脑发育和功能至关重要. 这些细胞外基质结构的改变与神经发育障碍有关,影响认知和行为.

关键词:
大脑发育 大脑发育细胞外矩阵是细胞外矩阵.神经新生是神经发生的过程.周神经网络是什么?周神经网络突触性可塑性 突触性可塑性

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科学领域:

  • 神经科学是一个神经科学.
  • 发展生物学 发展生物学
  • 细胞外矩阵生物学 细胞外矩阵生物学

背景情况:

  • 周神经网络 (PNN) 是中枢神经系统中专门的细胞外矩阵结构.
  • 它们由各种分子组成,这些分子覆盖神经元,影响突触功能和可塑性.
  • 在神经元成熟和神经回路的稳定中,PNN起着至关重要的作用.

研究的目的:

  • 审查最近关于PNN的发展,功能和变化的发现.
  • 探索PNN在神经发育病理中的作用.
  • 将PNN神经生物学与对神经发育障碍的理解相结合.

主要方法:

  • 对PNN最近研究的文献综述.
  • 分析PNN的组成,功能和动态.
  • 在神经发育障碍的背景下检查PNN变化.

主要成果:

  • PNN对于突触形成,稳定和高阶大脑连接至关重要.
  • PNN重塑影响神经元可塑性,学习,记忆和社会行为.
  • 在PNN动态中发生的干扰与各种神经发育病理有关.

结论:

  • 在整个发育过程中,PNN是神经元功能和可塑性的关键调节者.
  • 了解PNN变化,可以了解神经发育障碍的机制.
  • 对PNN的进一步研究可能会揭示大脑病理的新型治疗点.