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相关概念视频

Long-term Potentiation01:25

Long-term Potentiation

3.7K
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

58.9K
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.
58.9K
Neuroplasticity01:01

Neuroplasticity

2.0K
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.
2.0K
Long-term Depression01:03

Long-term Depression

3.4K
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

33.4K
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.
33.4K
Integration of Synaptic Events01:28

Integration of Synaptic Events

4.5K
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...
4.5K

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相关实验视频

Updated: Feb 22, 2026

3D Modeling of Dendritic Spines with Synaptic Plasticity
07:13

3D Modeling of Dendritic Spines with Synaptic Plasticity

Published on: May 18, 2020

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行为时间尺度突触可塑性:属性,元素和功能.

Jeffrey C Magee1,2

  • 1Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX, USA. jcmagee@bcm.edu.

Nature neuroscience
|February 20, 2026
PubMed
概括
此摘要是机器生成的。

行为时间尺度突触可塑性 (BTSP) 是一种新的大脑机制,可实现快速学习和记忆形成. 海马中的这种可塑性允许有效地存储记忆和概括经验.

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

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Ex Vivo Optogenetic Interrogation of Long-Range Synaptic Transmission and Plasticity from Medial Prefrontal Cortex to Lateral Entorhinal Cortex
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Ex Vivo Optogenetic Interrogation of Long-Range Synaptic Transmission and Plasticity from Medial Prefrontal Cortex to Lateral Entorhinal Cortex

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相关实验视频

Last Updated: Feb 22, 2026

3D Modeling of Dendritic Spines with Synaptic Plasticity
07:13

3D Modeling of Dendritic Spines with Synaptic Plasticity

Published on: May 18, 2020

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

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

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Ex Vivo Optogenetic Interrogation of Long-Range Synaptic Transmission and Plasticity from Medial Prefrontal Cortex to Lateral Entorhinal Cortex
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Ex Vivo Optogenetic Interrogation of Long-Range Synaptic Transmission and Plasticity from Medial Prefrontal Cortex to Lateral Entorhinal Cortex

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科学领域:

  • 神经科学是一个神经科学.
  • 认知科学 认知科学

背景情况:

  • 了解大脑的学习和记忆是一个关键的科学挑战.
  • 行为时间尺度突触可塑性 (BTSP) 与基于经验的学习和记忆有关.
  • BTSP是一种强大的双向可塑性,在几秒钟内影响突触重量.

研究的目的:

  • 探索BTSP在学习和记忆中的作用.
  • 阐明BTSP背后的机制,包括平原潜力启动.
  • 调查BTSP对存储,检索和概括内存的潜力.

主要方法:

  • 研究表明BTSP与海马功能有关.
  • 单个树突事件的平原潜能诱导的分析.
  • 控制机制的研究,包括局部反抑制和更高阶的大脑输入.

主要成果:

  • 与传统的可塑性机制不同,BTSP是由单一的树突高原潜力诱导的.
  • 高原潜力的启动涉及到局部反抑制和指导性的更高阶输入.
  • BTSP为内存提供非标准的信用分配,可能减少突触稳定需求.

结论:

  • BTSP提供了一种新的机制,可以形成特定情节的记忆,并从过去的经验中推广.
  • 这种可塑性可能使海马网络能够有效地存储和检索信息.
  • 进一步的BTSP研究可以弥合系统,认知和分子层面的学习和记忆调查.