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相关概念视频

Associative Learning01:27

Associative Learning

575
Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
Classical conditioning, also known...
575
Real-World Application of Classical Conditioning01:15

Real-World Application of Classical Conditioning

734
Classical conditioning not only includes the initial pairing of stimuli but also extends to more complex forms, such as higher-order conditioning. Higher-order conditioning involves creating associations beyond the primary conditioned stimulus, resulting in a chain of conditioned responses.
Higher-order, or second-order, conditioning occurs when a neutral stimulus becomes associated with an already established conditioned stimulus through repeated pairings. For instance, if a dog has been...
734
Principles of Classical Conditioning01:23

Principles of Classical Conditioning

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Classical conditioning, as described by Ivan Pavlov, is a foundational concept in associative learning, where a neutral stimulus becomes capable of eliciting a conditioned response through association with an unconditioned stimulus. The process of acquisition, where this learning occurs, and the subsequent phenomena of contiguity, contingency, generalization, discrimination, extinction, and spontaneous recovery are crucial for a comprehensive understanding of classical conditioning.
During the...
988
Higher Mental Functions of Brain: Learning and Memory01:26

Higher Mental Functions of Brain: Learning and Memory

967
Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or...
967
Long-term Potentiation01:35

Long-term Potentiation

55.8K
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.
55.8K
Generalization, Discrimination, and Extinction01:24

Generalization, Discrimination, and Extinction

788
Generalization, discrimination, and extinction are key concepts in operant conditioning that influence how behaviors are learned and maintained.
Generalization occurs when a behavior reinforced in one context is performed in similar situations. For instance, a student who studies diligently for calculus and receives excellent grades might apply the same study habits to psychology and history, expecting similar results. Generalization shows how learning in one setting can influence behavior in...
788

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相关实验视频

Updated: Sep 11, 2025

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

Published on: June 23, 2022

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抑制维护增强了随后的关联学习.

Ziyao Zhang1, Jarrod A Lewis-Peacock1

  • 1Department of Psychology, The University of Texas at Austin, Austin, TX 78712.

Proceedings of the National Academy of Sciences of the United States of America
|August 12, 2025
PubMed
概括
此摘要是机器生成的。

在工作记忆 (WM) 中抑制不相关的信息可以改善新的记忆形成. 这种认知控制增强了记忆编码,并减少了检索过程中的干扰,有利于长期记忆.

关键词:
MVPA MVPA是什么意思协会式学习是一种协会式学习.忘记是一种忘记.在海马体内,海马体记忆抑制 - 抑制记忆.

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Extinction Training During the Reconsolidation Window Prevents Recovery of Fear
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Disrupting Reconsolidation of Fear Memory in Humans by a Noradrenergic β-Blocker
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Disrupting Reconsolidation of Fear Memory in Humans by a Noradrenergic β-Blocker

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相关实验视频

Last Updated: Sep 11, 2025

Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
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Extinction Training During the Reconsolidation Window Prevents Recovery of Fear
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Extinction Training During the Reconsolidation Window Prevents Recovery of Fear

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科学领域:

  • 认知神经科学 认知神经科学
  • 心理学 心理学 心理学

背景情况:

  • 从工作记忆 (WM) 中删除不相关的信息可以释放认知资源.
  • 这个过程也可能支持长期记忆的形成.

研究的目的:

  • 调查 WM 中抑制不相关信息是否可以增强长期记忆.
  • 描述这种效应背后的神经机制.

主要方法:

  • 使用一种联想式记忆范式,有着指导式遗忘指令.
  • 进行了互补的行为 (N=22) 和fMRI (N=17) 实验.
  • 参与者编码和回忆物品协会,根据指示保持或抑制特定物品.

主要成果:

  • 抑制对直接关联的项目有损记忆,但对随后编码的项目有增强的记忆.
  • 多素模式分析显示,在抑制后,非被抑制的项目在海马亚区域CA1中增强了编码保真度.
  • 在检索过程中,被抑制项目的重新激活减少了,这表明竞争减少了.

结论:

  • 在工作记忆中抑制不需要的信息有利于新记忆的形成.
  • 这通过提高编码保真度和偏向检索远离被压抑的关联来实现.