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相关概念视频

Working Memory01:24

Working Memory

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 information.
Chunking and Rehearsal in Sensory Memory01:22

Chunking and Rehearsal in Sensory Memory

Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of information more...
Flashbulb Memory01:16

Flashbulb Memory

A flashbulb memory is a highly vivid and detailed memory, often linked to events of significant emotional impact. These memories stand out in contrast to everyday memories due to their clarity and the precision with which they are recalled. The strong emotions associated with the event act as a catalyst, ensuring that specific details, such as one's location, actions, and even peripheral elements, are etched into memory with remarkable accuracy. For example, many people can vividly recall where...
Eyewitness Memory01:22

Eyewitness Memory

Eyewitness memory refers to the recollection of events by someone who has directly witnessed them, often serving as critical evidence in legal settings. This type of memory is commonly used in criminal cases where a witness describes details like a suspect's appearance, clothing, or behavior during a crime. However, despite its perceived reliability, eyewitness memory is prone to significant errors.
One such error is memory distortion, which occurs because human memory does not function like a...
Interference and Decay01:16

Interference and Decay

Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
Mnemonic Devices01:23

Mnemonic Devices

Mnemonic devices are cognitive tools that facilitate memory retention by linking new information to familiar patterns or organizational strategies. These techniques are beneficial for remembering complex or lengthy sets of information by simplifying and structuring them in easily retrievable ways.
Acronyms
Acronyms are created by using the initial letters of a series of words to form a new word or phrase. This approach condenses complex information into a single, memorable entity. For example,...

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相关实验视频

Updated: Jun 25, 2026

Transcranial Direct Current Stimulation tDCS of Wernicke's and Broca's Areas in Studies of Language Learning and Word Acquisition
12:49

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经直流刺激可以选择性地改善时间工作记忆.

Bingxin Lin1, Yuxin Cai1, Yeonju Jeong1

  • 1Department of Psychology and Cognitive Sciences, Tsinghua University, Beijing, China.

International journal of psychophysiology : official journal of the International Organization of Psychophysiology
|October 22, 2025
PubMed
概括
此摘要是机器生成的。

在前额叶皮层 (PFC) 上进行的阳道横直流刺激 (tDCS) 在3秒值选择性地提高了时间工作记忆 (WM) 能力. 这种非侵入性脑刺激增强了表现,特别是在超过值的时间内,突出了PFC的作用.

关键词:
持续时间 持续时间后面的平面皮层皮层.前额叶皮层前额叶皮层.时间性工作记忆 时间性工作记忆tDCSCS 是一个很好的方法.

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相关实验视频

Last Updated: Jun 25, 2026

Transcranial Direct Current Stimulation tDCS of Wernicke's and Broca's Areas in Studies of Language Learning and Word Acquisition
12:49

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Published on: July 13, 2019

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Transcranial Direct Current Stimulation tDCS for Memory Enhancement
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Transcranial Direct Current Stimulation tDCS for Memory Enhancement

Published on: September 18, 2021

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High-definition Transcranial Direct Current Stimulation over Right Dorsolateral Prefrontal Cortex to Enhance Metacognitive Sensitivity
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813

科学领域:

  • 神经科学是一个神经科学.
  • 认知心理学 认知心理学
  • 神经刺激是一种神经刺激.

背景情况:

  • 时间工作记忆 (WM) 的容量有限,通常在2-3秒左右.
  • 超直流刺激 (tDCS) 是一种非侵入性神经调节技术,具有潜在的认知增强.
  • 了解WM容量的神经相关性对于开发有效的干预措施至关重要.

研究的目的:

  • 调查右前额叶皮层 (PFC) 或后额叶皮层 (PPC) 上的阳道tDCS是否可以增强时间WM容量超过2-3秒的值.
  • 确定PFC与PPC在支持超值时间WM方面的特定作用.
  • 提供因果关系证据,证明这些地区参与了WM的时间能力.

主要方法:

  • 一个匹配样本的范式被用来评估时间WM容量跨持续时间的1,2,3,和4秒.
  • 56名健康参与者接受了阳极tDCS或假刺激,而不是右PFC或PPC.
  • 在tDCS干预之前和之后立即测量性能.

主要成果:

  • 在PFC上的阳极tDCS显著改善了时间WM准确性,特别是在3秒持续时间.
  • 在其他持续时间 (1,2,或4秒) 或在PPC上进行刺激时,没有观察到显著的影响.
  • 增强是特定于值以上的持续时间,表明有针对性的效果.

结论:

  • 这些发现提供了因果证据,即PFC在支持时间WM能力方面发挥着关键作用,特别是在接近关键值的持续时间.
  • PPC刺激并没有显著改善时间WM容量.
  • 在PFC上进行单次阳极tDCS会话可以在3秒钟的标志上选择性地增强时间WM,这表明WM缺陷的潜在治疗目标.