相关实验视频
Updated: Jul 16, 2025
15:57
Brain Imaging Investigation of the Memory-Enhancing Effect of Emotion
Published on: May 4, 2011
16.7K
通过记忆检索和维护中的神经振荡,绘制下和前额皮层之间的信息流
Tao Zhou1, Keisuke Kawasaki2, Takafumi Suzuki3
1Department of Neurosurgery of the Second Affiliated Hospital and Interdisciplinary Institute of Neuroscience and Technology, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou, China; MOE Frontier Science Center for Brain Science and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou, China.
Cell reports
|September 23, 2023
概括
神经振荡协调下皮质 (ITC) 和前额皮质 (PFC) 之间的记忆处理. 特定的大脑区域充当网络节点,促进记忆检索和工作记忆的信息流.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 系统神经科学 系统神经科学
背景情况:
- 下皮质 (ITC) 和前额叶皮质 (PFC) 在记忆功能方面相互作用.
- 神经振荡是大脑区域间通信的关键.
- 在记忆任务期间,ITC和PFC之间的振荡信息流的功能组织尚未得到充分理解.
研究的目的:
- 在使用神经振荡进行记忆任务时,绘制ITC和PFC之间的信息流.
- 识别特定的振荡频率和参与记忆检索和维护的大脑区域.
- 了解底层的内存处理的网络动态.
主要方法:
- 记录了从子执行视觉关联任务的电皮质图 (ECoG) 信号.
- 格兰杰因果关系分析应用于ECoG数据,以量化信息流.
- 分析的重点是特定频段内的振荡活动.
主要成果:
- 在ITC的特定区域显示,在记忆检索和维护过程中,PFC的信息流向和信息流向增加.
- 这种增加的流量是由明显的频率振荡介导的,形成了功能集群.
- 泰达频段振荡在相似的ITC和PFC区域显示出双向增加,表明相互交换.
结论:
- 特定的ITC和PFC子区域在内存信息处理网络中充当关键节点.
- 在记忆任务期间,Theta频段振荡在这些皮层之间的双向通信中发挥着重要作用.
- 这些发现阐明了涉及ITC-PFC相互作用的记忆检索和工作记忆的网络机制.
相关概念视频
01:19Role of Hippocampus in Memory
293
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...
293
01:26Higher Mental Functions of Brain: Learning and Memory
861
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...
861
01:14Role of Cerebellum and Prefrontal Cortex in Memory
464
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...
464
01:25Olfaction
44.4K
The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...
The olfactory receptors are embedded in the cilia of the...
44.4K
01:23Storage
98
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...
98
01:19Understanding Memory
358
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...
358