相关实验视频
Updated: Jun 24, 2025

08:59
Horizontal Hippocampal Slices of the Mouse Brain
Published on: September 22, 2020
18.1K
海马将现在与过去和未来的目标分离
Alison Montagrin1,2,3, Denise E Croote4, Maria Giulia Preti5,6,7
1The Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA. alison.montagrin@unige.ch.
Nature communications
|June 6, 2024
概括
海马通过时间的接近来组织目标. 过去和未来的目标激活前海马体,而当前的目标则激活后海马体,用时间标绘制目标.
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
- 神经成像是一种神经成像.
背景情况:
- 大脑在不同的时间尺度上管理目标.
- 海马体支持精神时间旅行,并在其前后轴上组织信息,从详细到通用表示.
- 了解海马在时间目标组织中的作用至关重要.
研究的目的:
- 为了研究海马是如何随着时间的推移区分目标的.
- 为了确定海马是否编码时间,无论细节或抽象.
- 为了检查海马激活模式,即时与暂时遥远的目标.
主要方法:
- 在模拟火星任务的31名参与者身上利用了7T功能性MRI.
- 检查了海马体对时间目标距离的编码.
- 与目标时间近距离相关的大脑活动.
主要成果:
- 海马追踪目标仅基于时间距离的距离.
- 过去和未来的目标激活了左前海马.
- 当前的目标与左后海马进行了接触.
结论:
- 海马利用一个时间系统来组织目标.
- 海马长轴延伸到包括时间目标映射.
- 这提供了关于时间认知和目标管理的神经基础的见解.
更多相关视频
相关概念视频
Role of Hippocampus in Memory
222
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...
222
Higher Mental Functions of Brain: Learning and Memory
739
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...
739
Dissociative Disorders
57
Dissociative disorders represent complex psychological conditions characterized by disruptions in consciousness, memory, identity, or perception. These disruptions cause individuals to experience a disconnection from their thoughts, emotions, and memories. The phenomenon is not merely an occasional lapse in attention but a profound alteration in mental functioning that can severely impact daily life.
Dissociative Fugue
A hallmark feature of dissociative disorders is the dissociative fugue...
Dissociative Fugue
A hallmark feature of dissociative disorders is the dissociative fugue...
57
Functional Brain Systems: Limbic System
2.6K
The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
2.6K
Role of Cerebellum and Prefrontal Cortex in Memory
415
The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
415
Interference and Decay
135
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...
135

