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関連する概念動画

Working Memory01:24

Working Memory

Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this information.
Storage01:23

Storage

A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze each...
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...
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.
Postsynaptic Potential (PSP)01:32

Postsynaptic Potential (PSP)

Postsynaptic potential (PSP) refers to a change in the electrical potential of a neuron when neurotransmitters released by presynaptic neurons bind to postsynaptic receptors. This potential can either be excitatory, leading to depolarization and ultimately action potential generation, or inhibitory, leading to hyperpolarization and suppression of the postsynaptic neuron.
There are two types of receptors: ionotropic and metabotropic.
The ionotropic receptor is the membrane protein that has an...

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Updated: Jul 6, 2026

Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)
09:05

Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)

Published on: June 12, 2017

作業記憶のシナプス理論

Gianluigi Mongillo1, Omri Barak, Misha Tsodyks

  • 1Group for Neural Theory, Département d'Etudes Cognitives, Ecole Normale Supérieure et Collège-de-France, Paris, France.

Science (New York, N.Y.)
|March 15, 2008
PubMed
まとめ
この要約は機械生成です。

作業記憶は,持続的な神経発火だけでなく,カルシウム媒介のシナプス促進によって維持されることがあります. このカルシウムバッファメカニズムは,代謝的に効率的で,情報を保持するために堅牢です.

さらに関連する動画

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
10:38

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

Published on: July 16, 2015

Investigation of Synaptic Tagging/Capture and Cross-capture using Acute Hippocampal Slices from Rodents
11:29

Investigation of Synaptic Tagging/Capture and Cross-capture using Acute Hippocampal Slices from Rodents

Published on: September 4, 2015

関連する実験動画

Last Updated: Jul 6, 2026

Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)
09:05

Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)

Published on: June 12, 2017

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
10:38

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

Published on: July 16, 2015

Investigation of Synaptic Tagging/Capture and Cross-capture using Acute Hippocampal Slices from Rodents
11:29

Investigation of Synaptic Tagging/Capture and Cross-capture using Acute Hippocampal Slices from Rodents

Published on: September 4, 2015

科学分野:

  • 神経科学は神経科学である.
  • コンピューティング神経科学
  • 細胞神経科学は細胞神経科学である.

背景:

  • 作業記憶は,認知機能にとって極めて重要です.
  • 持続的なスパイク活動は,従来,作業記憶のニューラル基盤であると仮定されています.
  • 既存のモデルは,代謝効率と強度を説明する上で課題に直面しています.

研究 の 目的:

  • 作業メモリ維持のための代替メカニズムを提案する.
  • 作業記憶のための新皮質ネットワークにおけるカルシウムダイナミクスの役割を調査する.
  • 代謝的に効率的で堅牢な作業記憶モデルを提供すること.

主な方法:

  • シナプス促進の理論的モデリング.
  • 再発性新皮質ネットワークにおけるカルシウム運動学的分析.
  • 記憶の持続時間に対する自発的な活動の影響を調査するシミュレーション.

主要な成果:

  • カルシウム媒介のシナプス促進は,作業記憶のための妥当なバッファーを提供します.
  • このメカニズムは,低リフレッシュレートを可能にし,代謝効率を高めます.
  • ネットワークの自発的な活動は,ワーキングメモリの持続時間と安定性を動的に調節することができます.

結論:

  • 作業記憶は,単に持続的なスパイキングではなく,カルシウムダイナミクスによって支えられることがあります.
  • このカルシウムベースのモデルは,代謝的により効率的で堅固な説明を提供します.
  • ネットワーク活動を調節することは,作業メモリパラメータを制御するための潜在的な経路を示します.