在使用纵向贝叶斯集群的认知能力不受损的老年人中,前端对面缩轨迹
G Lorenzon1, K Poulakis1, R Mohanty1
1Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Neo 7th floor, SE-141 83, Huddinge, Sweden.
Computers in biology and medicine
|October 2, 2024
概括
这项研究在认知上没有受损的个体中确定了明显的脑衰老模式,揭示了单独的灰色物质概况和轨迹. 这些发现有助于理解衰老的异质性,并识别有风险的个体.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 脑部成像 脑部成像
背景情况:
- 衰老与额头和/或形缩有关.
- 以前的研究表明,老化大脑模式的异质性.
- 认知上没有受损的个体表现出各种灰色物质变化.
研究的目的:
- 为了识别灰色物质的不同集群的形状和衰老的轨迹.
- 分析认知不受损的个体中大脑衰老的异质性.
- 了解大脑结构,脑血管负担和认知之间的关系.
主要方法:
- 利用了307名 (60-85岁) 个体的结构磁共振成像 (MRI) 数据.
- 应用了一种新的纵向贝叶斯无监督聚类方法.
- 基于脑血管和认知特征的鉴定集群的特征.
主要成果:
- 确定了四个不同的星团,具有独特的灰色物质配置和缩轨迹.
- 观察到的显著差异主要在额头和部区域.
- 展示了前面对面的灰质模式和脑血管负担/认知衰退之间的差异关联.
结论:
- 这些发现通过揭示共存的前侧平行灰色物质模式,使前侧平行灰色物质老化理论与前侧平行灰色物质老化理论相协调.
- 强调了识别明显的衰老轨迹的重要性.
- 表明有可能改善分层和识别与衰老相关疾病风险较高的个体.
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