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相关概念视频

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
LTP can occur when...
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Long-term Potentiation01:35

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.
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Role of Neurotransmitters in Memory01:23

Role of Neurotransmitters in Memory

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Neurotransmitters are integral to the brain's communication system, enabling neurons to transmit signals across synapses. This chemical exchange underpins various cognitive functions, including memory processes. The role of neurotransmitters in memory is multifaceted, influencing the encoding, consolidation, and retrieval of memories through their action on different neural circuits.
 Glutamate and Synaptic Plasticity
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Working Memory01:24

Working Memory

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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...
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Long-term Depression01:03

Long-term Depression

3.5K
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.
Calcium Ion Concentration Mechanism
If over...
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Long-term Depression01:05

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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相关实验视频

Updated: Mar 8, 2026

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

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协同作用的短期突触可塑性机制用于工作记忆.

Florian Fiebig1, Nikolaos Chrysanthisdis1, Anders Lansner1,2,3

  • 1KTH Royal Institute of Technology, Sweden.

Journal of cognitive neuroscience
|March 6, 2026
PubMed
概括
此摘要是机器生成的。

工作记忆机制最好通过结合可塑性类型来解释,而不是单个解释. 这种复合模型增强了用于认知任务的尖端神经网络模型.

更多相关视频

Improved Preparation and Preservation of Hippocampal Mouse Slices for a Very Stable and Reproducible Recording of Long-term Potentiation
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Long-term Potentiation of Perforant Pathway-dentate Gyrus Synapse in Freely Behaving Mice
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相关实验视频

Last Updated: Mar 8, 2026

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

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Improved Preparation and Preservation of Hippocampal Mouse Slices for a Very Stable and Reproducible Recording of Long-term Potentiation
09:39

Improved Preparation and Preservation of Hippocampal Mouse Slices for a Very Stable and Reproducible Recording of Long-term Potentiation

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Long-term Potentiation of Perforant Pathway-dentate Gyrus Synapse in Freely Behaving Mice
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科学领域:

  • 神经科学是一个神经科学.
  • 计算神经科学是一种神经科学.
  • 认知科学 认知科学

背景情况:

  • 工作记忆 (WM) 对认知任务至关重要,但其潜在的神经和突触机制仍在争论中.
  • 传统模型侧重于持续的神经元发射,而新的想法则建议动态维护机制.
  • 现有的计算模型探索了WM的各种生物学上可信的可塑性机制.

研究的目的:

  • 研究工作记忆中不同短期可塑性机制之间的相互作用.
  • 评估是否结合可塑性机制提供了比减少主义模型更全面的解释.
  • 为了增强生物可信性和功能范围的尖端神经网络模型WM.

主要方法:

  • 系统测试内在兴奋能力,突触促进/增强和Hebbian可塑性的组合.
  • 使用一个尖端的神经网络模型.
  • 评估一系列WM任务动机的性能,包括一次性编码,自由/cued回忆和多项维护/更新.

主要成果:

  • 整合了多个可塑性机制的复合模型在操作任务执行中表现优于减少主义模型.
  • 塑性机制之间的相互作用扩大了WM模型的功能范围.
  • 特定的可塑性类型被确定为可观察到的性能差异的关键贡献者.

结论:

  • 一种复合方法来建模工作记忆的可塑性优于减少主义的解释.
  • 塑性机制之间的相互作用提高了模型的功能性和生物可信性.
  • 了解不同可塑性类型的相互作用对于推进工作记忆的计算模型至关重要.