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相关概念视频

Working Memory01:24

Working Memory

134
Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...
134
Role of Cerebellum and Prefrontal Cortex in Memory01:14

Role of Cerebellum and Prefrontal Cortex in Memory

369
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...
369
Higher Mental Functions of Brain: Learning and Memory01:26

Higher Mental Functions of Brain: Learning and Memory

668
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...
668
Lobes of the Cerebrum01:22

Lobes of the Cerebrum

546
The cerebral cortex, a critical structure of the brain, is intricately divided into two hemispheres, each consisting of four distinct lobes: occipital, temporal, frontal, and parietal. These lobes function cooperatively to regulate various cognitive and sensory functions, forming the basis of our complex neural capabilities.
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements....
546
Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

158
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...
158

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相关实验视频

Updated: Jun 5, 2025

Working Memory Training for Older Participants: A Control Group Training Regimen and Initial Intellectual Functioning Assessment
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Working Memory Training for Older Participants: A Control Group Training Regimen and Initial Intellectual Functioning Assessment

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在的侧面前额皮层中更新工作记忆.

Yichen Qian1, Roger Herikstad1, Camilo Libedinsky1

  • 19 Arts Link, AS4-03-39, Singapore 117572.

The Journal of neuroscience : the official journal of the Society for Neuroscience
|December 12, 2024
PubMed
概括

工作记忆更新涉及前额叶皮层中独特的时间动态. 前弓状皮质 (PAC) 更新记忆速度比侧面前额皮质 (LPFC) 快,这表明神经系统有专门的机制.

科学领域:

  • 神经科学是一个神经科学.
  • 认知科学 认知科学
  • 灵长类动物模型

背景情况:

  • 工作记忆对于执行职能至关重要,它可以进行短期的信息存储和操作.
  • 侧面前额叶皮层 (LPFC) 参与工作记忆,但其特定的更新机制仍然不完全理解.
  • 了解大脑如何更新和保护记忆表征是解读认知控制的关键.

研究的目的:

  • 研究前额叶皮层中工作记忆更新与分心保护背后的单个神经元机制.
  • 为了比较侧面前额皮质 (LPFC) 和前皮质 (PAC) 之间的记忆更新的时间动态.
  • 阐明这些地区的神经群体如何区分更新目标信息和忽视分心因素.

主要方法:

  • 在记忆更新任务期间,记录了雄性的LPFC和PAC中的单个神经元活动.
  • 子更新了目标位置,同时忽略了分散注意力的刺激.
  • 使用人口解码分析神经反应来定时记忆更新和分心符号编码.

主要成果:

  • 在PAC中的神经元信号更新的记忆位置显著更快 (∼100毫秒) 比LPFC中的神经元 (∼400毫秒).
  • 与LPFC神经元相比,PAC神经元显示了分心信息的长时间编码.
  • 人口解码揭示了两个区域的目标和分散器信息的直角子空间,最大限度地减少干扰.

更多相关视频

Reversible Cooling-induced Deactivations to Study Cortical Contributions to Obstacle Memory in the Walking Cat
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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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相关实验视频

Last Updated: Jun 5, 2025

Working Memory Training for Older Participants: A Control Group Training Regimen and Initial Intellectual Functioning Assessment
07:01

Working Memory Training for Older Participants: A Control Group Training Regimen and Initial Intellectual Functioning Assessment

Published on: September 20, 2020

4.6K
Reversible Cooling-induced Deactivations to Study Cortical Contributions to Obstacle Memory in the Walking Cat
09:43

Reversible Cooling-induced Deactivations to Study Cortical Contributions to Obstacle Memory in the Walking Cat

Published on: December 11, 2017

6.9K
A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

Published on: July 16, 2015

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结论:

  • 在PAC和LPFC之间进行工作记忆更新时存在不同的时间动态.
  • 记忆维护和更新之间的相互作用涉及专门的神经机制.
  • 这些发现表明,邻近前额叶区域的局部神经过程有助于工作记忆更新和分心器排斥的复杂操作.