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関連する概念動画

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

Long-term Potentiation

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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
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Higher Mental Functions of Brain: Learning and Memory01:26

Higher Mental Functions of Brain: Learning and Memory

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Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or...
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Long-term Depression01:03

Long-term Depression

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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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Plasticity00:58

Plasticity

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Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...
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Associative Learning01:27

Associative Learning

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Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
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Slice Patch Clamp Technique for Analyzing Learning-Induced Plasticity
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アソシエーティブ・ラーニングにおける区画化デンドリティック・プラスティシティ

Simon d'Aquin1,2, Andras Szonyi1,3, Mathias Mahn1

  • 1Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland.

Science (New York, N.Y.)
|April 14, 2022
PubMed
まとめ
この要約は機械生成です。

恐怖による条件付けは dendrites と somas の脳神経に 明確な可塑性をもたらします この学習誘発の可塑性は 分離されていて 神経回路の計算能力を高めます

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科学分野:

  • 神経科学
  • 細胞生物学
  • 学習 と 記憶

背景:

  • 行動の変化は 脳の回路の長期的変化に依存しています
  • シナプスの可塑性は学習に不可欠ですが,そのin vivoの性質は不明です.
  • 行動する動物の 樹状の可塑性を理解することは不可欠です

研究 の 目的:

  • 行動する動物における活性型デンドライトの機能的および可塑性に関する研究.
  • 恐怖条件付けの過程で 桃体の主要な神経細胞の 感覚反応がどう変化するか 調べてみましょう
  • アミグダラの区間特有の可塑性メカニズムを明らかにする.

主な方法:

  • 2フォトンのカルシウム画像で 行動する動物を調べる
  • クラシックな恐怖条件付けの パラダイム
  • アミグダラの主要なニューロンの感覚反応の分析

主要な成果:

  • 恐怖条件付けは神経 dendritesと somasの 微分的な可塑性を誘発しました
  • コンパートメント特有の抑制による可塑性
  • 学習誘発の可塑性は,ソマとデンドライトの間で切り離された.

結論:

  • アミグダラの回路は 関連学習で区画特有の可塑性を示します
  • ソマとデンドライトの分離した可塑性は 異なる細胞機構を示唆している.
  • これらのメカニズムは 学習のための 桃体回路の計算能力を高めます