相关实验视频
Updated: Jun 5, 2025

11:13
Ex Vivo Optogenetic Dissection of Fear Circuits in Brain Slices
Published on: April 5, 2016
15.9K
杏仁体动态的多区域控制可靠地反映了恐惧,记忆,年龄的恐惧
Yuichi Makino1,2, Yi Wang3,4, Thomas J McHugh5
1Laboratory for Circuit and Behavioral Physiology, RIKEN Center for Brain Science, Wako-shi, Saitama, Japan. makino-yuichi@g.ecc.u-tokyo.ac.jp.
Nature communications
|December 9, 2024
概括
较老的恐惧记忆涉及较弱的,节奏的底侧杏仁体 (BLA) 马活动,受海马体CA1和前带皮层的太振荡的影响. 这个大脑电路活动区分了近期和远程记忆回忆.
科学领域:
- 神经科学是一个神经科学.
- 计算神经科学是一种神经科学.
- 系统神经科学 系统神经科学
背景情况:
- 底侧杏仁体 (BLA) 对恐惧记忆至关重要.
- 了解分布式大脑电路如何影响BLA活动对不同年龄段的记忆回忆至关重要.
研究的目的:
- 为了研究在不同年龄段的恐惧记忆的回忆过程中,BLA中的神经活动是如何被广泛的大脑网络动态调节的.
- 识别与年龄相关的情境恐惧记忆回忆相关的神经特征.
主要方法:
- 在雄性小鼠中进行了纵向多位点电生理学记录.
- 计算建模,包括光梯度增强机和变压器网络,用于分析神经数据.
- 振荡特征和原始局部场潜在被提取用于分类.
主要成果:
- 回忆旧的上下文恐惧记忆显示较弱,更有节奏的BLA马活性.
- BLA马活性被海马CA1和前带皮质皮层的theta振荡远程带动.
- 计算模型根据BLA马和CA1太振荡准确地对记忆年龄进行了分类 (远程与近期).
结论:
- 对BLA活动的多区域大脑电路控制提供了可靠的神经特征,用于年龄依赖的记忆回忆.
- 在BLA,海马体和前带带皮层之间进行的甲-玛相互作用是记忆年龄区分的关键机制.
相关概念视频
Role of Amygdala in Memory
160
The amygdala is a small, almond-shaped structure responsible for processing and storing memories, particularly those linked to emotions like fear and stress. It plays an essential role in the brain's response to emotionally significant events and often enhances memory formation by triggering stress hormone release. The amygdala is vital for encoding and retrieving memories associated with fear or stress, a process that is adaptive by helping organisms avoid dangerous situations.
One of the...
One of the...
160
Functional Brain Systems: Limbic System
2.3K
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...
2.3K
Traumatic Memory
72
Emotionally traumatic events often lead to memories that are exceptionally vivid and enduring, sometimes persisting with remarkable clarity throughout an individual's life. A classic example of this phenomenon is a person who survives a car accident. Even years later, they may recall every detail of the event with startling accuracy — the screeching of the tires, the jarring impact, and the acrid smell of burning rubber. Such vividness contrasts sharply with how an individual...
72

