记忆巩固影响了位置和响应导航的相互作用
Patrizia M Maier1, Deetje Iggena1, Christoph J Ploner2
1Charité - Universitätsmedizin Berlin, Department of Neurology, Berlin, Germany; Humboldt-Universität zu Berlin, Faculty of Philosophy, Berlin School of Mind and Brain, Berlin, Germany.
概括
随着时间的推移,人类的空间导航从基于位置的转向基于响应的策略. 位置记忆,依赖于海马,比响应记忆更快地消失,影响系统整合期间的导航选择.
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
- 空间导航 空间导航
背景情况:
- 空间导航依赖于不同的记忆系统:位置 (基于地标) 和响应 (基于序列).
- 记忆巩固随着时间的推移改变了这些表示,但它对导航策略的影响仍然不清楚.
研究的目的:
- 研究记忆表征的转换如何影响人类在不同时间延迟的位置和响应导航.
- 确定位置和响应记忆衰退的时间进程及其对导航策略选择的影响.
主要方法:
- 健康的成年人通过虚拟迷宫进行了导航,在1小时,1天和2周后评估了战略偏好和记忆回忆.
- 研究设计捕捉了早期的突触变化,夜间睡眠效应和长期网络重组.
主要成果:
- 导航策略的偏好随着时间的推移而发生了重大变化.
- 位置策略使用在短暂延迟 (≤1天) 之后占主导地位,具有高地标勘探.
- 2周后,位置策略的使用减少,对位置和响应策略的依赖相等,路径的重复增加,这表明响应策略可以弥补消失的位置记忆.
结论:
- 位置记忆,依赖于海马体功能,衰变速度比响应记忆快,它依赖于海马体以外的区域.
- 从位置到响应导航的转变反映了取决于上下文的变化和在系统整合期间导航网络的重组.
相关概念视频
Role of Hippocampus in Memory
239
The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
239
Storage
84
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...
84
Interference and Decay
136
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...
136
Higher Mental Functions of Brain: Learning and Memory
746
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...
746
Implicit Memories
128
Implicit memories, also known as non-declarative memories, are long-term memories that function outside of conscious awareness. These memories influence behavior and skills without explicit knowledge. This type of memory is evident in tasks like playing tennis, snowboarding, and texting. Implicit memory has three subsystems: procedural memory, conditioning, and priming. This type of memory is essential in various activities, from everyday tasks to specialized skills.
One key aspect of implicit...
One key aspect of implicit...
128
Understanding Memory
294
Memory is the retention of information or experiences over time, facilitated through three main processes: encoding, storage, and retrieval. Encoding is the process of inputting information into the memory system. For instance, when listening to a lecture, watching a play, reading a book, or having a conversation, the brain is actively encoding information. This initial stage involves transforming sensory input into a form that can be processed and stored by the brain. Various factors, such as...
294


