在与年龄相关的听力损失中,皮质连接体功能梯度的重组
Zhaopeng Tong1, Juan Zhang2, Chunhua Xing3
1Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China; Institute of Hearing and Speech-Language Science, Sun Yat-sen University, Guangzhou, China.
NeuroImage
|November 28, 2023
概括
与年龄相关的听力损失 (ARHL) 破坏大脑连接,影响认知功能并增加痴呆风险. 这项研究揭示了ARHL个体的大脑梯度的改变,区分了正常认知和认知衰退的人.
科学领域:
- 神经科学是一个神经科学.
- 老年学是指老年学的学科.
- 医疗成像医学成像
背景情况:
- 与年龄相关的听力损失 (ARHL) 是老年人常见的感官缺陷,也是痴呆症的已知危险因素.
- 人们对ARHL影响认知衰退的确切机制仍然不太了解.
- 了解这些机制对于制定有针对性的干预措施至关重要.
研究的目的:
- 用连接体梯度框架研究ARHL对大脑功能连接和信息整合的影响.
- 为了确定与ARHL相关的功能梯度的特定变化.
- 为了区分那些表现出认知衰退的ARHL个体与没有认知衰退的个体.
主要方法:
- 使用休息状态功能磁共振成像 (rs-fMRI) 来自ARHL和健康对照 (HCs) 个体的数据.
- 应用了连接体梯度框架来分析全球,网络和区域功能梯度变化.
- 采用支持向量机 (SVM) 模型,根据大脑成像数据对认知状态进行分类.
主要成果:
- 患有ARHL的个体表现出一个合同的主要主要到跨模的功能梯度轴,特别是在视觉和默认模式网络中.
- 在ARHL中观察到变化的梯度解释比率和变异.
- 在ARHL的认知衰退与视觉,边缘,突出和默认模式网络的特定梯度变化有关.
结论:
- ARHL与感官和高级认知大脑网络之间的信息处理中断有关.
- 特定的大脑网络节点和梯度被确定为ARHL认知衰退的关键指标.
- 这些发现为ARHL认知障碍的神经生物学机制提供了新的见解,并建议潜在的治疗点.
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