大脑结构重组调解了听力损失和认知障碍之间的关系
Yao Wang1,2,3, Jianfen Luo4, Wenqing Li1
1Department of Biomedical Engineering, School of Life Sciences, Tiangong University, Tianjin, China.
Brain imaging and behavior
|June 24, 2025
概括
与年龄相关的听力损失 (听力障碍) 与认知能力下降有关. 大脑结构的变化,特别是海马,调解了这种联系,特别是在那些有认知障碍的人身上.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 听力学 听力学是指听力学.
背景情况:
- 长或与年龄相关的听力损失是老年人中普遍存在的疾病.
- 它越来越被认为是认知能力下降的重要危险因素.
- 将结构性大脑变化与听力损失和认知障碍联系在一起的精确神经机制尚未完全理解.
研究的目的:
- 为了研究与听觉和认知功能相关的神经解剖学变化在presbycusis.
- 确定大脑区域调解听力损失和认知障碍之间的关系.
- 为了探索这些机制在保存和受损认知的个体之间的差异.
主要方法:
- 磁共振成像 (MRI) 用于评估大脑结构.
- 对参与者进行了听觉和认知评估.
- 根据蒙特利尔认知评估得分,长鼻患者被分为认知维护 (长鼻-CP) 和认知障碍 (长鼻-CI) 分组.
主要成果:
- 灰质体积 (GMV) 缩在与对照组相比,在大脑的患者中观察到.
- 河马,上额叶皮层 (SFC) 和后带带皮层 (PCC) 的GMV调解了听力损失和认知障碍之间的联系.
- 海马体显示SFC和PCCGMV之间最强的调解效应 (56.14%) 在presbycusis-CI患者中,这一发现没有在对照组或presbycusis-CP患者中观察到.
结论:
- 长病患者,特别是认知障碍患者 (长-CI),在听觉和认知相关领域表现出不同的大脑重组模式.
- 海马在调解与大脑关联的认知障碍方面发挥着至关重要的作用.
- 这些研究结果表明,海马体是患有长症相关认知衰退的潜在治疗点.
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