大脑结构和功能磁共振成像变化在与收不足的个体
Yuxia Wang1,2, Gantian Huang3, Ye Wu3
1Department of Radiology, Huaxi MR Research Center (HMRRC), Institution of Radiology and Medical Imaging, West China Hospital, Sichuan University, Chengdu, China.
概括
收性缺陷 (CI) 患者表现出大脑结构和功能的改变,特别是在视觉和眼运动区域以及小脑. 这些变化可以解释视觉疲劳,并提供对补偿机制的见解.
科学领域:
- 神经科学是一个神经科学.
- 眼科医生 眼科 眼科
- 医疗成像医学成像
背景情况:
- 收性缺陷 (CI) 损害了在近距离工作中将眼睛转向内侧的能力.
- 包括大脑结构和功能变化在内的CI的神经支柱尚未得到充分理解.
- 多式脑磁共振成像 (MRI) 为研究这些机制提供了一个潜在的方法.
研究的目的:
- 探索融合缺陷 (CI) 背后的神经机制.
- 用多式核磁共振 (MRI) 来研究CI患者的大脑结构和功能变化.
主要方法:
- 招募了34名CI参与者和35名健康对照者 (HC).
- 进行视觉检查和多模式脑部MRI,包括结构MRI和静止状态功能MRI.
- 分析了皮层厚度,体积,表面积,低频波动的分数幅度 (fALFF) 和功能连接性,比较了群体并与临床测量相关.
主要成果:
- 与HC相比,CI参与者表现出右额头眼球场,顶部眼球场和左中间轨道前皮层的灰质体积 (GMV) 和表面积减少.
- 在CI个体的右中额头和下旋中观察到GMV和表面积的增加.
- 在CI患者中发现左小脑中更高的fALFF和双边小脑之间的功能连接,与右中前额回环GMV,左小脑fALFF和接近收点之间的相关性.
结论:
- 视觉和眼运动皮层的结构完整性下降,加上小脑活动的增加,可能会导致CI中的收功能障碍和视觉疲劳.
- 右中前和下旋的扩大结构指标表明注意力和抛物线处理的补偿机制.
- 这项研究揭示了结系统中分离的结构和功能性大脑变化,增强了对CI神经基础的理解.
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