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相关概念视频

Brain Imaging01:14

Brain Imaging

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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...
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Hearing01:31

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When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
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占主导地位的白质微观结构的变化超过灰质在耳大脑耳.

Qianhui Xu1, Tingting Chai2, Jun Yao3

  • 1Department of Otolaryngology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.

NeuroImage
|April 25, 2025
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概括

耳患者表现出白质微结构变化,包括纤维破坏和连接性改变,影响认知功能. 这些大脑变化,而不是灰质变化,与 tinnitus 中的神经心理性能缺陷相关.

关键词:
微观结构的微观结构多个的多个.神经心理学神经心理学声 (Tinnitus) 是一种听力障碍.拓学属性 拓学属性

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科学领域:

  • 神经成像是一种神经成像.
  • 神经科学是一个神经科学.
  • 医疗成像医学成像

背景情况:

  • 耳是一种复杂的听觉障碍,可能与大脑的结构和功能变化有关.
  • 了解耳中的白质和灰质微观结构变化对于解释相关的认知缺陷至关重要.

研究的目的:

  • 研究与健康对照组相比,声患者的白质和灰质微观结构差异.
  • 为了检查观察到的大脑微观结构变化和 tinnitus 中的神经心理性能之间的关系.

主要方法:

  • 在48名耳患者和48名对照中,使用多扩散加权成像 (DWI) 和高级建模 (DTI,NODDI) 的横截面研究.
  • 基于流体的空间统计 (TBSS) 和基于灰色物质的空间统计 (GBSS) 用于微观结构分析.
  • 进行了神经心理评估,并分析了大脑指标和认知表现之间的相关性.

主要成果:

  • 耳患者表现出白质异常,包括轴向扩散率下降和特定通道 (例如,小) 的方向分散增加.
  • 在耳患者中观察到白质连接强度和网络效率降低.
  • 没有发现任何显著的灰质微观结构变化;方向分散介导了耳与认知测试表现之间的联系.

结论:

  • 白质纤维的破坏和改变的内部连接在耳中比灰质变化更为突出.
  • 这些微观结构上的白质变化与 tinnitus 患者的认知功能变化有关.