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Long-term Potentiation01:35

Long-term Potentiation

59.5K
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
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Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

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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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Neural Circuits01:25

Neural Circuits

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Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
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Neuroplasticity01:01

Neuroplasticity

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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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Long-term Potentiation01:25

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Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
LTP can occur when...
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Single Synapse Indicators of Glutamate Release and Uptake in Acute Brain Slices from Normal and Huntington Mice
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繰り返されるネットワーク活動は,ストライタルシナプトゲネシスを誘発する.

Yevgenia Kozorovitskiy1, Arpiar Saunders, Caroline A Johnson

  • 1Howard Hughes Medical Institute, Department of Neurobiology, Harvard Medical School, 220 Longwood Ave, Boston, Massachusetts 02115, USA.

Nature
|June 5, 2012
PubMed
まとめ
この要約は機械生成です。

発達中のストライアタムにおける初期の神経活動は,基礎性腺の配線を形作る. 抑制経路のバランスは,刺激的入力を調節し,ポジティブなフィードバックを強調します.

さらに関連する動画

Electrophysiological Investigations of Retinogeniculate and Corticogeniculate Synapse Function
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In Vivo Direct Reprogramming of Resident Glial Cells into Interneurons by Intracerebral Injection of Viral Vectors
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関連する実験動画

Last Updated: Mar 29, 2026

Single Synapse Indicators of Glutamate Release and Uptake in Acute Brain Slices from Normal and Huntington Mice
08:27

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Electrophysiological Investigations of Retinogeniculate and Corticogeniculate Synapse Function
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科学分野:

  • 神経科学は神経科学である.
  • 発達神経科学とは
  • システム神経科学 システム神経科学

背景:

  • 神経活動は,特に感覚系において,産後期の脳配線にとって極めて重要です.
  • ベースリンパ節の発達における初期活動の役割は十分に理解されていない.
  • ベースリンゴは,運動制御と学習に不可欠ですが,直接的な感覚入力や明確な地形組織が欠けている.

研究 の 目的:

  • ベースガンリアの発達における初期のニューロン活動の役割を調査する.
  • ストライアタムにおける活動バランスが,ベースリンパ節の配線にどのように影響するかを決定する.

主な方法:

  • トランスジェニックマウスとウイルスの遺伝子転送技術を活用した.
  • 変調された神経伝達物質の放出と神経細胞の活動が,体内では,発達中のストライアタムに発生する.

主要な成果:

  • ストライアタムの2つの阻害経路のバランスは,ベースリンゴの刺激性内置を調節する.
  • 多段階のネットワークを通じた活動伝播は,基礎性ガンジア配線の鍵です.

結論:

  • ストライアタムの早期の活動は,ベースリンパ節の発達に不可欠です.
  • ポジティブなフィードバックメカニズムは,基礎ギャングリアネットワークの成熟を促す上で重要な役割を果たします.