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相关概念视频

Cerebral Hemispheres01:05

Cerebral Hemispheres

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The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...
305
Lateralization01:28

Lateralization

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Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
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Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

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The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
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相关实验视频

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Whole-brain Segmentation and Change-point Analysis of Anatomical Brain MRI—Application in Premanifest Huntington's Disease
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在亨廷顿病中改变了半球间连接.

Ali Demir1, H Diana Rosas1

  • 1Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA; Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA.

NeuroImage. Clinical
|September 18, 2024
PubMed
概括

亨廷顿病 (HD) 逐渐损害大脑中半球间的连接,影响运动等功能. 方向性通道密度模式显示,在HD患者的体中,纤维密度显著减少.

科学领域:

  • 神经科学是一个神经科学.
  • 神经成像是一种神经成像.
  • 神经学 神经学

背景情况:

  • 体促进半球间的沟通,这对神经功能至关重要.
  • 亨廷顿病 (HD) 是一种神经退行性疾病,影响认知,情绪和运动功能,通常与大脑连接受损有关.

研究的目的:

  • 在具有基因扩展亨廷顿病 (HD) 个体中使用定向通道密度模式 (dTDPs) 调查半球间连接的变化.
  • 评估dTDP是否能够检测出在症状前和早期症状的疾病发病患者的体中逐渐发生的变化.

主要方法:

  • 利用定向通道密度模式 (dTDPs) 来分析体的结构完整性.
  • 使用Hofer-Frahm方案进行区域分析,对体进行了细分.
  • 在基因扩展的症状前和早期症状的HD队列中比较dTDP与对照组 (隐含).

主要成果:

  • 在HD队列中确定了体纤维密度的区域选择性和渐进性差异.
  • 观察到在症状前的HD.在特定的体区域 (IIb,III,IV) 纤维密度下降的趋势.
  • 在早期有症状的高发性病患者中,在所有体区域中发现纤维密度的显著减少.

结论:

关键词:
体 (corpus callosum) 是一个体.扩散磁共振成像技术的研究.定向通道密度模式 方向通道密度模式人类的主体是人类的主体.亨廷顿氏病是亨廷顿氏病的一种疾病.半球间的连接性 半球间的连接性

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  • 定向导管密度模式 (dTDPs) 在评估亨廷顿病 (HD) 中半球间连接的个体和渐进变化方面是有效的.
  • 研究结果突出显示,体是受HD影响的关键区域,即使在早期阶段也是如此.