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相关概念视频

Neuroplasticity01:01

Neuroplasticity

377
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.
377
Long-term Potentiation01:25

Long-term Potentiation

2.8K
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...
2.8K
Plasticity00:58

Plasticity

2.1K
Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...
2.1K
Long-term Depression01:03

Long-term Depression

2.5K
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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Plastic Behavior01:21

Plastic Behavior

200
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
200
Plastic Deformations01:19

Plastic Deformations

134
Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
134

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Slice Patch Clamp Technique for Analyzing Learning-Induced Plasticity
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在培训后处理学习过程中的可塑性-稳定性动态.

Takashi Yamada1, Takeo Watanabe1, Yuka Sasaki1

  • 1Department of Cognitive, Linguistic, and Psychological Sciences, Brown University, Providence, RI, USA.

Trends in cognitive sciences
|October 20, 2023
PubMed
概括
此摘要是机器生成的。

训练后的学习依赖于大脑的可塑性和稳定性. 新的研究揭示了睡眠和清醒期间的可塑性-稳定性循环,可以增强和保护学习.

关键词:
干扰干扰是干扰的神经成像是一种神经成像.超越学习 超越学习程序式学习是指程序式学习.睡眠 睡眠 睡眠 睡眠 睡眠稳定 稳定 稳定 稳定

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相关实验视频

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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
  • 学习和记忆的学习和记忆

背景情况:

  • 学习超越了正式的培训时间.
  • 大脑的可塑性和稳定性对于训练后的记忆巩固至关重要.
  • 缺乏塑性-稳定性动态的统一测量方法,阻碍了对学习过程的理解.

研究的目的:

  • 在学习期间和之后探索大脑可塑性和稳定性之间的平衡.
  • 研究这些动态如何影响培训后的学习,特别是程序式学习.
  • 将行为数据与刺激与抑制 (E/I) 比率作为神经动态的衡量标准进行整合.

主要方法:

  • 利用行为范式来评估学习和记忆.
  • 采用激发与抑制 (E/I) 比率作为神经可塑性和稳定性的新方法.
  • 在训练和后训练阶段分析了可塑性-稳定性动态,包括清醒和睡眠.

主要成果:

  • 确定了在清醒和睡眠期间发生的明显的可塑性-稳定性循环.
  • 证明这些循环与加强培训后学习有关.
  • 证明这些循环保护新获取的信息免受后续学习的干扰.

结论:

  • 塑性和稳定性之间的平衡在学习和巩固过程中被动态调节.
  • 可通过E/I比率测量的可塑性-稳定性循环对于有效和持久的学习至关重要.
  • 了解这些循环为优化学习和记忆巩固策略提供了见解.