在间隔学习中,持久记忆的时间依赖的巩固机制在间隔学习中
Yifeixue Yang1, Ziyi Huang1, Yun Yang1
1Shanghai Key Laboratory of Brain Functional Genomics (Ministry of Education), Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai, China.
Communications biology
|April 1, 2025
概括
间距学习通过在默认模式网络 (DMN) 中促进神经集成和重复来增强持久记忆,与大规模学习不同. 在DMN中的神经模式预测了间隔学习后的长期记忆保留.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 记忆研究 记忆研究
背景情况:
- 时间依赖的整合对于记忆稳定和海马-皮质转移至关重要.
- 巩固在形成持久记忆中的确切作用及其在间隔学习中的神经相关性尚未完全理解.
研究的目的:
- 调查时间依赖的整合如何在间隔学习与大规模学习中促进持久记忆形成.
- 在间隔学习范式中识别预测持久记忆的神经特征.
主要方法:
- 招募了48名参与者进行为期3天的间隔学习或为期1天的集体学习.
- 收集了休息状态和基于任务的fMRI数据,即时,一周和一个月的延迟.
- 利用表示相似性分析来检查海马体和默认模式网络 (DMN) 子系统中的神经集成和重复.
主要成果:
- 与集体学习不同的是,间隔学习在立即检索期间在DMN子系统中显示出更高的神经模式相似性.
- 背部-中枢DMN (DMNdm) 和中枢-部DMN子系统中的神经模式相似性预测了1个月的延迟时的记忆耐用性.
- 在间隔学习的DMNdm和在两种学习类型的海马体中观察到持久记忆的神经重复增加.
结论:
- 在间距学习中依赖时间的巩固促进神经集成和在皮层内重复,特别是DMN.
- 这些皮质变化,而不是仅仅是海马变化,可能是形成持久记忆的关键.
- 研究结果强调了DMN在通过间隔学习巩固长期记忆中的作用.
相关概念视频
Chunking and Rehearsal in Sensory Memory
118
Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of...
118
Long-term Potentiation
54.5K
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.
54.5K
Higher Mental Functions of Brain: Learning and Memory
548
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...
548
Interference and Decay
78
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...
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
78
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...
Calcium Ion Concentration Mechanism
If over...
2.5K
System of Memory
3.9K
Memory is categorized into three major systems: sensory memory, short-term memory (STM), and long-term memory (LTM). These systems differ in their capacity and the duration for which they can hold information. Sensory memory captures raw sensory input from the environment, holding it for just a few seconds or less. For example, on hearing a brief, loud sound, like a car horn honking, the sound seems to linger in the mind for a moment even after it stops. This is an instance of sensory memory...
3.9K


