V2EX mossy fibers

Mossy Fibers

释义 Definition

苔藓纤维(mossy fibers):神经科学/解剖学术语,通常指海马齿状回(dentate gyrus)颗粒细胞的轴突,它们主要投射到海马CA3区,形成体积较大、分支丰富的突触末梢;在学习记忆相关回路中很重要。(在不同语境下也可泛指“外观呈苔藓状”的神经纤维终末,但最常见用法与海马回路有关。)

发音 Pronunciation (IPA)

/msi fabrz/ (美式常见)
/msi fabz/ (英式常见)

例句 Examples

Mossy fibers carry signals from the dentate gyrus to CA3.
苔藓纤维把信号从齿状回传递到海马CA3区。

Changes in mossy fiber synapses can influence how the hippocampus stores new memories.
苔藓纤维突触的变化会影响海马如何存储新的记忆。

词源 Etymology

mossy(像苔藓的)来自 moss(苔藓)+ 形容词后缀 -y,表示“长得像/带有……特征”。之所以叫“苔藓”,是因为这些纤维在显微镜下的末梢结构较粗大、分支密集,外观有点像一团“苔藓”。fiber(s) 源自拉丁语 fibra(纤维)。

相关词 Related Words

文献与作品 Notable Works

  • Principles of Neural Science(Eric R. Kandel 等):在海马回路与突触可塑性章节中讨论苔藓纤维通路。
  • The Hippocampus Book(Andersen 等):系统介绍齿状回CA3的苔藓纤维投射与功能。
  • The Synaptic Organization of the Brain(Gordon M. Shepherd):涉及海马突触结构与苔藓纤维突触特征。
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