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相关概念视频

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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

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Simultaneous Transcranial Alternating Current Stimulation and Functional Magnetic Resonance Imaging
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岛内皮层调节通过重复性跨膜磁刺激与同时功能性磁共振成像:初步发现

Daphné Citherlet1,2, Olivier Boucher1,3, Manon Robert1

  • 1Neurosciences Axis, Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada.

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|July 29, 2025
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概括

重复的横磁刺激 (rTMS) 可以改变特定岛屿皮层区域的大脑活动. 这项神经成像研究表明,rTMS有效调节岛屿功能,由BOLD信号变化和味觉障碍证明.

关键词:
大胆的信号信号.同时进行rTMS-fMRI.这种疾病是dysgeusia.功能磁力共振成像 (fMRI) 是一种高频电信是高频电信的一种.岛屿皮层的岛屿皮层.通过神经调节进行神经调节.这是神经导航.神经刺激的神经刺激rTMS的使用情况.

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科学领域:

  • 神经科学是一个神经科学.
  • 神经调节是一种神经调节.
  • 脑部成像 脑部成像

背景情况:

  • 岛屿是一个关键的大脑区域,参与许多功能和病理.
  • 重复性跨磁刺激 (rTMS) 是一种潜在的神经调节技术.
  • 有限的研究存在于rTMS对岛屿及其目标参与的影响.

研究的目的:

  • 为了研究rTMS对岛内皮层活动的影响.
  • 通过功能磁共振成像 (fMRI) 评估在rTMS期间胰岛的血氧水平依赖 (BOLD) 信号变化.

主要方法:

  • 六名参与者在MRI扫描仪中通过右侧岛内皮层接受了5Hz高频rTMS.
  • 神经导航确保了线圈的精确位置.
  • 配对的t测试比较了刺激期间的BOLD信号与静止状态fMRI,具有FDR校正 (q <0.01).

主要成果:

  • rTMS在不同的岛屿次区域显著调节了BOLD活动.
  • 在前部和中部胰岛的活性增加;在腹部前部和后部胰岛的活性下降.
  • 在两名参与者中,过渡性味觉障碍 (味觉改变) 表明功能调节.

结论:

  • rTMS可以调节岛内皮层的特定子区域.
  • 观察到的BOLD反应和dysgeusia支持rTMS在岛屿神经调节的可行性.