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Storage01:23

Storage

83
A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze...
83
Interference and Decay01:16

Interference and Decay

123
Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
123
Retrieval01:12

Retrieval

103
Retrieval is the process of getting information out of memory storage and back into conscious awareness. This ability is essential for daily tasks like brushing hair and teeth, driving to work, and performing job duties. Retrieval occurs in three ways: recall, recognition, and relearning.
Recall involves accessing information without cues, such as during an essay test, where individuals must retrieve facts and concepts from memory unaided. Another example is remembering the name of a colleague...
103
Relationship Formation02:12

Relationship Formation

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What do you think is the single most influential factor in determining with whom you become friends and whom you form romantic relationships? You might be surprised to learn that the answer is simple: the people with whom you have the most contact. This most important factor is proximity. You are more likely to be friends with people you have regular contact with. For example, there are decades of research that shows that you are more likely to become friends with people who live in your dorm,...
40.0K
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
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Revisionist Views of Adolescent and Adult Cognition01:24

Revisionist Views of Adolescent and Adult Cognition

31
A revisionist approach to Jean Piaget's theory of cognitive development has brought new insights that challenge and reinterpret his established ideas. Piaget proposed that the formal operational stage, emerging in adolescence, represents the culmination of cognitive maturity. During this stage, individuals are said to develop abstract thinking, engage in systematic problem-solving, and show a form of egocentrism, believing others are as preoccupied with their behavior as they are...
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相关实验视频

Updated: Jun 19, 2025

A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance
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检索过程如何随着年龄的变化:探索语义网络和检索动态中的年龄差异.

Mariana Teles1, Isabelle Moore1, Yoed N Kenett2

  • 1Department of Psychology, University of Virginia.

Canadian journal of experimental psychology = Revue canadienne de psychologie experimentale
|July 25, 2024
PubMed
概括

与年轻人相比,老年人表现出不太完善的语义记忆网络和较弱的时间回忆. 记忆检索的这种与年龄相关的下降可能源于时间上下文恢复的减少.

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科学领域:

  • 认知心理学 认知心理学
  • 神经科学是一个神经科学.
  • 人类衰老研究研究

背景情况:

  • 年龄显著影响认知功能,包括记忆力.
  • 了解语义记忆和检索中的与年龄相关的变化对于认知健康至关重要.
  • 以前的研究表明,年龄组之间的记忆表现存在差异.

研究的目的:

  • 研究衰老对语义记忆网络结构的影响.
  • 检查记忆检索动态中的与年龄相关的差异.
  • 为了将网络结构和检索动态与回忆性能相关联.

主要方法:

  • 采用单一列表免费回忆范式,共有318名参与者 (年轻者25-55岁;年长者61-88岁).
  • 通过分析单词的同时出现和序列来构建语义记忆网络.
  • 评估检索动态,包括时间连续性和方向性.

主要成果:

  • 较年长的成年人表现出比年轻的成年人更少的集成语义网络 (更高的路径长度,模块化).
  • 检索时的时间连续性效应在老年人中不那么明显.
  • 前进的时间关联与所有参与者的更高的回忆性能相关.

结论:

  • 自由回忆的年龄相关下降可能与时间上下文恢复受损有关.
  • 老年人表现出不同的语义记忆网络结构,看起来不那么灵活.
  • 网络集成和检索动态的差异有助于与年龄相关的记忆性能变化.