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関連する概念動画

Integration of Synaptic Events01:28

Integration of Synaptic Events

Synaptic integration mainly includes the summation of graded potentials. Graded potentials, regardless of their type, cause subtle alterations in membrane voltage, resulting in either depolarization or hyperpolarization. These incremental changes, when combined or summed, can propel the neuron toward its threshold. Consider, for example, a membrane experiencing a +15 mV shift, causing it to depolarize from -70 mV to -55 mV. In this scenario, graded potentials govern the membrane's ability to...
Chemical Synapses01:26

Chemical Synapses

Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Chemical Synapses01:26

Chemical Synapses

Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Synaptic Signaling01:09

Synaptic Signaling

Neurons communicate at synapses, or junctions, to excite or inhibit the activity of other neurons or target cells, such as muscles. Synapses may be chemical or electrical.
Most synapses are chemical, meaning an electrical impulse or action potential spurs the release of chemical messengers called neurotransmitters. The neuron sending the signal is called the presynaptic neuron, and the neuron receiving the signal is the postsynaptic neuron.
The presynaptic neuron fires an action potential that...
Synaptic Signaling01:12

Synaptic Signaling

Neurons communicate at synapses, or junctions, to excite or inhibit the activity of other neurons or target cells, such as muscles. Synapses may be chemical or electrical.
The Synapse02:47

The Synapse

Neurons communicate with one another by passing on their electrical signals to other neurons. A synapse is the location where two neurons meet to exchange signals. At the synapse, the neuron that sends the signal is called the presynaptic cell, while the neuron that receives the message is called the postsynaptic cell. Note that most neurons can be both presynaptic and postsynaptic, as they both transmit and receive information.

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関連する実験動画

Updated: May 25, 2026

Real-time Electrophysiology: Using Closed-loop Protocols to Probe Neuronal Dynamics and Beyond
08:08

Real-time Electrophysiology: Using Closed-loop Protocols to Probe Neuronal Dynamics and Beyond

Published on: June 24, 2015

局所的に同期されたシナプス入力.

Naoya Takahashi1, Kazuo Kitamura, Naoki Matsuo

  • 1Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.

Science (New York, N.Y.)
|January 24, 2012
PubMed
まとめ
この要約は機械生成です。

ニューロンは,デンドライトで機能的なクラスターを形成し,同期された入力を受け取ります. この組織は情報を分割し,ニューロンが信号を処理する方法に影響を与え,シナプスの可塑性や統合に影響を与えます.

さらに関連する動画

Electrophysiological Investigations of Retinogeniculate and Corticogeniculate Synapse Function
09:09

Electrophysiological Investigations of Retinogeniculate and Corticogeniculate Synapse Function

Published on: August 7, 2019

Evaluation of Synaptic Multiplicity Using Whole-cell Patch-clamp Electrophysiology
10:52

Evaluation of Synaptic Multiplicity Using Whole-cell Patch-clamp Electrophysiology

Published on: April 23, 2019

関連する実験動画

Last Updated: May 25, 2026

Real-time Electrophysiology: Using Closed-loop Protocols to Probe Neuronal Dynamics and Beyond
08:08

Real-time Electrophysiology: Using Closed-loop Protocols to Probe Neuronal Dynamics and Beyond

Published on: June 24, 2015

Electrophysiological Investigations of Retinogeniculate and Corticogeniculate Synapse Function
09:09

Electrophysiological Investigations of Retinogeniculate and Corticogeniculate Synapse Function

Published on: August 7, 2019

Evaluation of Synaptic Multiplicity Using Whole-cell Patch-clamp Electrophysiology
10:52

Evaluation of Synaptic Multiplicity Using Whole-cell Patch-clamp Electrophysiology

Published on: April 23, 2019

科学分野:

  • 神経科学は神経科学である.
  • 細胞生物学 細胞生物学
  • 計算神経科学とは

背景:

  • シナプス入力が非線形変換され,アクションポテンシャルに変換されます.
  • シングルシナプスの解像度における dendritic 活性化の空間時間的なパターンは完全に理解されていません.

研究 の 目的:

  • シングルシナプスの解像度でデンドリット活性化の空間時間的なパターンを解明する.
  • デンドライトのシナプスインプットの機能的組織を調査する.

主な方法:

  • ネズミの海馬と新皮質のピラミッド神経細胞の何百ものデンドリット状の棘からシナプス活動の光学画像.
  • インビヴォおよびエクスビヴォの実験アプローチ.

主要な成果:

  • 隣接する dendritic spinesは,しばしば自発的に活発なネットワークで同期されます.
  • シンクロナイズされた脊椎は,プレシナプス細胞アセンブリから局所的に収束する入力を受け取る"デンドリット焦点"を形成しました.
  • このクラスター化されたシナプス組織は,N-メチル-D-アスパルテート受容体依存回路改造中に観察されました.

結論:

  • クラスター化されたシナプス可塑性は,固有のプログラムで,デンドライトに沿って相関するインプットを区切ります.
  • デンドリット焦点は,非線形シナプス統合の基本的メカニズムを表す可能性があります.
  • シナプスインプットのサブセルラー幾何学は,ニューラルコンピューティングにおいて重要な役割を果たします.