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相关概念视频

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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相关实验视频

Updated: Jul 18, 2025

Acquisition of Resting-State Functional Magnetic Resonance Imaging Data in the Rat
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间歇性和连续性静止状态fMRI之间的相似之处和差异

Justyna Beresniewicz1, Frank Riemer2, Katarzyna Kazimierczak1,2

  • 1Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway.

Frontiers in human neuroscience
|August 21, 2023
PubMed
概括

功能磁共振成像 (fMRI) 中间歇性休息期显示了与连续休息相似的脑活动,但在默认模式网络 (DMN) 和它与其他网络的相互作用方面存在显著差异.

关键词:
默认模式网络 (DMN) 是一个默认模式网络.区块设计 区块设计认知任务 认知任务功能性磁共振成像 (fMRI) 是一种功能性磁共振成像.休息状态是休息状态.

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Dynamic Inter-subject Functional Connectivity Reveals Moment-to-Moment Brain Network Configurations Driven by Continuous or Communication Paradigms
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Simultaneous fMRI and Electrophysiology in the Rodent Brain
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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
  • 神经成像是一种神经成像.

背景情况:

  • 功能性磁共振成像 (fMRI) 块设计使用ON-块 (任务) 和OFF-块 (休息).
  • 关闭块可能代表间歇性静止状态,但它们与连续静止状态的相似性是未知的.
  • 默认模式网络 (DMN) 是在连续休息期间研究的关键网络.

研究的目的:

  • 使用fMRI调查间歇性和连续性休息状态之间的大脑活动的相似性和差异.
  • 为了比较OFF-blocks期间的大脑活动模式与专用连续休息期间的大脑活动模式.

主要方法:

  • 从47名健康参与者获得的fMRI数据.
  • 在一个ON-OFF区块设计中的OFF区块的间歇性静止状态数据.
  • 在任务后5分钟内获得的连续静止状态数据.

主要成果:

  • 间歇性和连续性休息状态之间的整体大脑活动是相似的.
  • 在DMN及其网络相互作用中观察到的差异.
  • 中间前额皮层 (MPFC) DMN地图中间歇性休息的重叠减少.
  • 在间歇休息期间,更强的DMN连接与突出网络 (SN).

结论:

  • 间歇性和连续性休息状态在大脑活动中表现出相似性和差异.
  • 观察到的差异可能源于间歇性休息期间的任务转移效应.
  • 需要进一步的研究才能充分阐明这些休息条件之间的区别.