Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Arrhenius Plots02:34

Arrhenius Plots

39.0K
The Arrhenius equation relates the activation energy and the rate constant, k, for chemical reactions. In the Arrhenius equation, k = Ae−Ea/RT, R is the ideal gas constant, which has a value of 8.314 J/mol·K, T is the temperature on the kelvin scale, Ea is the activation energy in J/mole, e is the constant 2.7183, and A is a constant called the frequency factor, which is related to the frequency of collisions and the orientation of the reacting molecules.
The Arrhenius equation can be used...
39.0K
Temperature Dependence on Reaction Rate02:55

Temperature Dependence on Reaction Rate

81.4K
The Collision Theory
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
81.4K
Effect of Temperature Change on Reaction Rate02:28

Effect of Temperature Change on Reaction Rate

4.0K
The Arrhenius equation,
4.0K
Long-term Potentiation01:25

Long-term Potentiation

2.7K
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...
2.7K
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...
2.5K
Le Chatelier's Principle: Changing Temperature02:19

Le Chatelier's Principle: Changing Temperature

29.5K
Consistent with the law of mass action, an equilibrium stressed by a change in concentration will shift to re-establish equilibrium without any change in the value of the equilibrium constant, K. When an equilibrium shifts in response to a temperature change, however, it is re-established with a different relative composition that exhibits a different value for the equilibrium constant.
To understand this phenomenon, consider the elementary reaction:
29.5K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Probing and modeling cell-cell communication in 2D biomimetic tissues.

Soft matter·2026
Same author

Flips reveal the universal impact of memory on random explorations.

Nature communications·2025
Same author

Evidence and quantification of memory effects in competitive first-passage events.

Science advances·2025
Same author

Exact Propagators of One-Dimensional Self-Interacting Random Walks.

Physical review letters·2024
Same author

Aging dynamics of d-dimensional locally activated random walks.

Physical review. E·2024
Same author

Extreme value statistics of jump processes.

Physical review. E·2024

相关实验视频

Updated: Jun 14, 2025

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

Published on: June 26, 2013

26.9K

长期记忆诱导对Arrhenius定律进行校正.

A Barbier-Chebbah1,2, O Bénichou3, R Voituriez2,4

  • 1Decision and Bayesian Computation, USR 3756 (C3BI/DBC) and Neuroscience Department CNRS UMR 3751, Institut Pasteur, Université de Paris, CNRS, 75015, Paris, France.

Nature communications
|August 28, 2024
PubMed
概括

这项研究揭示了对非马科夫过程中罕见事件动态的阿雷尼乌斯定律的新修正. 长期记忆引入了第二个有效的能量障碍,影响了反应速度.

更多相关视频

Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
07:17

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

Published on: June 23, 2022

2.4K
Using Practice Testing, Public Speaking, and Source Monitoring to Examine the Influences of Learning Strategies and Stress on Episodic Memory
07:59

Using Practice Testing, Public Speaking, and Source Monitoring to Examine the Influences of Learning Strategies and Stress on Episodic Memory

Published on: June 14, 2019

7.9K

相关实验视频

Last Updated: Jun 14, 2025

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

Published on: June 26, 2013

26.9K
Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
07:17

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

Published on: June 23, 2022

2.4K
Using Practice Testing, Public Speaking, and Source Monitoring to Examine the Influences of Learning Strategies and Stress on Episodic Memory
07:59

Using Practice Testing, Public Speaking, and Source Monitoring to Examine the Influences of Learning Strategies and Stress on Episodic Memory

Published on: June 14, 2019

7.9K

科学领域:

  • 化学动力学 化学动力学
  • 统计力学 统计力学
  • 复杂的系统复杂的系统.

背景情况:

  • 克莱默逃脱问题模型罕见事件动力学,通常遵循阿雷尼乌斯定律.
  • 分析方法与表现出长期记忆的非马科夫过程进行斗争,这是生物和物质系统中常见的.

研究的目的:

  • 在具有长期记忆的非马科夫过程中,量化确定对罕见配置的平均首次通道时间 (FPT).
  • 分析地推导出大能量障碍的非对称行为,并确定从标准阿雷尼乌斯定律的偏差.

主要方法:

  • 为具有长期记忆的非马科夫高斯过程开发一个最小模型.
  • 分析计算平均第一次通道时间 (FPT) 和它的非对称行为.
  • 对Arrhenius定律的修正项的识别和描述.

主要成果:

  • 对于罕见事件动力学来说,Arrhenius定律的新分析纠正得到了推导.
  • 这种纠正表现为第二个有效的能量障碍,取决于初始条件.
  • 导出的校正量化地捕捉了长期记忆对反应动力学的影响.

结论:

  • 长期记忆显著改变罕见事件动力学,需要从经典的阿雷尼乌斯定律偏离.
  • 确定了第二个有效的能量屏障,可以量化地衡量记忆的影响.
  • 这项工作为具有复杂记忆效应的系统提供了更准确的运动模型.