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相关概念视频

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
Glutamate, the brain's main excitatory neurotransmitter, is...
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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.
Calcium Ion Concentration Mechanism
If over...
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Chemical Synapses01:26

Chemical Synapses

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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...
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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
LTP can occur when...
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Excitatory and Inhibitory Effects of Neurotransmitters01:29

Excitatory and Inhibitory Effects of Neurotransmitters

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When an action potential reaches the presynaptic axon terminal, it releases neurotransmitters from the neuron into the synaptic cleft at a chemical synapse. The released neurotransmitter can be excitatory or inhibitory. The critical criteria commonly used to determine whether a molecule is a neurotransmitter at a chemical synapse are the molecule's presence in the presynaptic neuron. Second, its release is in response to strong presynaptic depolarization. And lastly, the presence of...
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Neural Regulation01:37

Neural Regulation

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Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
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相关实验视频

Updated: Jun 24, 2025

Investigation of Synaptic Tagging/Capture and Cross-capture using Acute Hippocampal Slices from Rodents
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记忆形成中的前突触调节者.

Oriane Turrel1, Lili Gao1, Stephan J Sigrist2,3

  • 1Institute for Biology, Genetics, Freie Universität Berlin, 14195 Berlin, Germany.

Learning & memory (Cold Spring Harbor, N.Y.)
|June 11, 2024
PubMed
概括
此摘要是机器生成的。

研究人员探索了Rab3和Neurexin-1如何影响果的记忆形成. 这两种蛋白质都对预突触过程至关重要,影响活性区域的重塑和创建新的记忆巩固区域.

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Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
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Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans

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Presynapse Formation Assay Using Presynapse Organizer Beads and “Neuron Ball” Culture
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Presynapse Formation Assay Using Presynapse Organizer Beads and “Neuron Ball” Culture

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相关实验视频

Last Updated: Jun 24, 2025

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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Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
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Presynapse Formation Assay Using Presynapse Organizer Beads and “Neuron Ball” Culture
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科学领域:

  • 神经科学是一个神经科学.
  • 分子生物学分子生物学
  • 遗传学 是一个遗传学.

背景情况:

  • 记忆的形成和巩固涉及神经元电路中的复杂的分子和结构变化.
  • 在不同的记忆阶段中,前突触调节器的确切作用尚未完全理解.

研究的目的:

  • 研究小GTPase Rab3和细胞粘附蛋白Neurexin-1在记忆形成中的作用.
  • 为了阐明这些蛋白质在Drosophila体Kenyon细胞的前突触终端中的功能.

主要方法:

  • 使用Drosophila melanogaster作为一个模型生物.
  • 专注于体的肯恩细胞,这是学习和记忆的关键大脑区域.
  • 检查了涉及Rab3和Neurexin-1的突触前机制.

主要成果:

  • 拉布3和神经素-1都对前突触终端的记忆支持过程至关重要.
  • 这些蛋白质在不同的可塑性模块中运作.
  • 它们的职能包括对现有活跃区 (AZ) 的改造和成熟以及形成新的AZ.

结论:

  • 在记忆形成过程中,Rab3和神经素-1在调节突触可塑性方面发挥着重要而独特的作用.
  • 这些发现为记忆巩固在突触层面的分子基础提供了洞察力.