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相关概念视频

Working Memory01:24

Working Memory

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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...
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Association Areas of the Cortex01:21

Association Areas of the Cortex

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Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
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相关实验视频

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Extracting Visual Evoked Potentials from EEG Data Recorded During fMRI-guided Transcranial Magnetic Stimulation
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在视觉工作记忆期间,全大脑人类振荡式LFP活动.

Balbir Singh1, Zhengyang Wang2, Leen M Madiah1

  • 1Department of Biomedical Engineering, Vanderbilt University.

bioRxiv : the preprint server for biology
|September 21, 2023
PubMed
概括

脑振荡,包括马功率,是视觉工作记忆的关键. 不同的大脑区域在记忆任务中表现出独特的振荡模式,揭示了一个广泛的神经网络.

关键词:
在LFP中,LFP是LFP.内录音的记录.工作记忆 工作记忆

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相关实验视频

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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
  • 电子生理学 电子生理学

背景情况:

  • 振荡性大脑活动与认知功能有关,但其在工作记忆中的确切作用尚不清楚.
  • 在工作记忆任务中了解这些振荡在整个大脑中的分布至关重要.

研究的目的:

  • 为了研究如何在人类工作记忆过程中,振荡活动模式在大脑区域和任务之间有所不同.
  • 使用本地场潜力绘制视觉工作记忆中涉及的网络.

主要方法:

  • 使用内深度电极记录了12名成年人的局部场电位 (LFP).
  • 参与者执行视觉空间和形状匹配工作记忆任务,延迟间隔有所变化.
  • 分析了与任务事件相关的不同频段 (例如,马,β) 的LFP功率变化.

主要成果:

  • 在视觉刺激呈现和工作记忆中的维护期间识别了广泛的皮层和皮层下激活.
  • 在工作记忆延迟期间观察到刺激出现时的宽带功率增加和持续的马功率.
  • 发现了特定区域的振荡特征,例如在刺激呈现期间皮质的高马功率和不同区域的差异性β功率下降.

结论:

  • 视觉工作记忆涉及一个分布式网络,在不同的大脑区域具有不同的振荡信号.
  • 马振荡在工作记忆期间保持信息方面发挥着重要作用.
  • 特定区域的振荡模式为视觉工作记忆的神经机制提供了洞察力.