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相关概念视频

Higher Mental Functions of Brain: Learning and Memory01:26

Higher Mental Functions of Brain: Learning and Memory

884
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...
884
Implicit Memories01:24

Implicit Memories

154
Implicit memories, also known as non-declarative memories, are long-term memories that function outside of conscious awareness. These memories influence behavior and skills without explicit knowledge. This type of memory is evident in tasks like playing tennis, snowboarding, and texting. Implicit memory has three subsystems: procedural memory, conditioning, and priming. This type of memory is essential in various activities, from everyday tasks to specialized skills.
One key aspect of implicit...
154
Long-term Potentiation01:35

Long-term Potentiation

55.4K
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
55.4K
Neuroplasticity01:01

Neuroplasticity

588
Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
588
Working Memory01:24

Working Memory

386
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...
386
Role of Cerebellum and Prefrontal Cortex in Memory01:14

Role of Cerebellum and Prefrontal Cortex in Memory

499
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...
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相关实验视频

Updated: Jul 24, 2025

A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance
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A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance

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指令负载诱导功能连接变化,与任务自动性和记忆偏好相关.

Alexander W Baumann1, Theo A J Schäfer2, Hannes Ruge1

  • 1Faculty of Psychology, Technische Universität Dresden, Dresden, Germany.

NeuroImage
|July 2, 2023
PubMed
概括

学习新规则涉及复杂的大脑机制. 较高的指令负载将侧向前额皮层 (LPFC) 连接从注意网络转移到默认模式网络,影响学习和记忆.

科学领域:

  • 认知神经科学 认知神经科学
  • 神经成像是一种神经成像.
  • 学习科学 学习科学

背景情况:

  • 通过教学获得新的规则是人类的一个基本能力.
  • 了解规则学习的认知和神经基础,尤其是在不同的认知负载下,至关重要.

研究的目的:

  • 调查指令负载如何影响规则执行期间的功能性大脑连接.
  • 检查侧面前额皮层 (LPFC) 和腹侧前额皮层 (VLPFC) 在不同负载条件下的规则学习中的作用.

主要方法:

  • 功能磁共振成像 (fMRI) 用于测量大脑活动.
  • 参与者在低 (4条规则) 和高 (10条规则) 的指令负载条件下学习并实施了刺激-反应规则.
  • 连接分析主要集中在LPFC和VLPFC地区.

主要成果:

  • 增加的指令负载改变了LPFC连接,从前端-双侧和背侧注意力网络转移到默认模式网络.
  • 左侧的VLPFC连接显示了与学习成功相关的持续负载相关效应,独立于实践.
  • 右侧的VLPFC连接对实践更敏感,这表明在灵活更新规则方面发挥了作用.

结论:

关键词:
自动性 自动性是自动性的.情节性记忆是一种情节性记忆.功能连接性的功能连接性.基于指令的学习是基于指令的学习.负载 负载 负载工作记忆 工作记忆

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  • 高指令负载可能超过工作内存容量,导致依赖默认模式的网络进程和潜在的内存冲突.
  • 半球VLPFC连接的差异凸显了在调解任务规则和学习过程中的自适应更新中扮演的独特角色.