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相关概念视频

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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...
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
Brain Imaging01:14

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).
Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...

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相关实验视频

Updated: Jun 22, 2026

Brain Imaging Investigation of the Neural Correlates of Observing Virtual Social Interactions
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作为解决问题的自愿行动:一个功能磁共振成像研究.

Silvia Seghezzi1,2, Daniel Yon2, Patrick Haggard1

  • 1Institute of Cognitive Neuroscience, University College London, Alexandra House, 17-19 Queen Square, London WC1 3AZ, United Kingdom.

Cerebral cortex (New York, N.Y. : 1991)
|November 24, 2025
PubMed
概括
此摘要是机器生成的。

人类追求目标涉及执行功能和意志控制. 脑部成像显示,额头和额头网络在自我生成的问题解决过程中支持行动规划,中侧额头皮质对于复杂的目标导向行动至关重要.

关键词:
行动行动行动行动行动行动计划 计划 计划 计划 计划 计划自己生成的自我生成.补充电机区域是一个补充电机区域.自愿行为是自愿的行为.

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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.

背景情况:

  • 人类以目标为导向的行动整合了执行功能和意志控制.
  • 执行职能研究的重点是解决问题的行动序列协调.
  • 自愿行动研究强调了内生产生和复杂问题的自主性.

研究的目的:

  • 用fMRI研究人类解决问题的意志的神经基础.
  • 探索执行智能和意志控制在目标导向行为中的融合.

主要方法:

  • 使用了功能磁共振成像 (fMRI).
  • 参与者承担了伦敦塔的任务,要么生成解决方案,要么遵循指示.
  • 记录了行为数据和大脑活动.

主要成果:

  • 在伦敦塔任务期间,自我生成的解决方案显示了行动计划的行为特征.
  • 行动规划与分布式的正面和状大脑网络激活有关.
  • 与前额前皮层网络的中间前额皮层连接对于以目标为导向的问题解决至关重要.

结论:

  • 以目标为导向的解决问题依赖于大脑区域的网络,包括额头和头顶区域.
  • 中间额叶皮质在复杂的目标导向行动中起着关键作用,与更广泛的前额叶网络集成.
  • 意志和执行控制交织在一起,使复杂的,自我主动的解决问题成为可能.