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相关概念视频

Working Memory01:24

Working Memory

147
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...
147
Role of Cerebellum and Prefrontal Cortex in Memory01:14

Role of Cerebellum and Prefrontal Cortex in Memory

392
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...
392
Information Processing Approach01:30

Information Processing Approach

32
The information-processing theory of cognitive development centers on fundamental mental processes, including attention, memory, and problem-solving skills. Researchers in this field examine how cognitive abilities, such as working memory, evolve and influence children's overall development. Studies indicate that children with stronger working memory tend to excel in reading comprehension, math, and problem-solving compared to peers with less efficient memory skills. Low working memory is...
32
High-Level and Low-Level Awareness01:19

High-Level and Low-Level Awareness

254
Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...
254
Parallel Processing01:20

Parallel Processing

146
The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
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Lobes of the Cerebrum01:22

Lobes of the Cerebrum

586
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....
586

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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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在工作记忆期间,前额叶皮质的动态层特定处理.

Jonas Karolis Degutis1,2,3, Denis Chaimow4, Daniel Haenelt4

  • 1Department of Psychology, Humboldt-Universität zu Berlin, Berlin, Germany. j.karolis.degutis@maxplanckschools.de.

Communications biology
|September 14, 2024
PubMed
概括
此摘要是机器生成的。

背侧前额皮质 (dlPFC) 的表面层优先处理工作记忆 (WM) 负载,在任务期间进行动态编码. 这与表面和深层在运动反应中的非差异性参与形成鲜明对比.

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Last Updated: Jun 13, 2025

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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
  • 神经成像是一种神经成像.

背景情况:

  • 脊侧前额叶皮层 (dlPFC) 对工作记忆 (WM) 是至关重要的.
  • 在WM期间,dlPFC内的特定细胞架构层的功能作用仍然不太清楚.
  • 了解层状电路是解读dlPFC对认知的贡献的关键.

研究的目的:

  • 在工作记忆任务期间调查人类dlPFC中的特定层次活动.
  • 检查WM负载和运动反应如何调节不同dlPFC皮质层中的活动.
  • 阐明dlPFC在WM中的功能层状组织.

主要方法:

  • 使用了超高分辨率的功能磁共振成像 (fMRI).
  • 参与者执行了一个延迟匹配到样本的任务来评估WM.
  • 分析了与WM负载和电机需求相关的层特定的BOLD响应.

主要成果:

  • 表面的dlPFC层在延迟和检索过程中对WM负载的反应显示出优先激活.
  • 在表面层编码WM负载的多变量模式显示了跨任务阶段的动态变化.
  • 表面和深层dlPFC层都同样参与了运动反应的执行.

结论:

  • 结果揭示了 dlPFC 内部用于工作记忆处理的板状特异性功能组织.
  • 表面层在WM负载编码中发挥着独特的作用,具有动态表示.
  • 这些发现挑战了先前关于 dlPFC 内偏好的深层参与运动反应的概念.