泰拉马斯和前额叶皮质的障碍有助于认知衰老:基于KL分歧的结构-功能合分析
Weifang Cao1, Jinpeng Niu2, Yong Liang3
1School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 611731, China; Institute of Electronic and Information Engineering of Guangdong, University of Electronic Science and Technology of China, Dongguan 523000, China; School of Radiology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an 271016, China.
Neuroscience
|September 5, 2024
概括
随着年龄的增长,大脑结构和功能的同步变化,特别是在前额叶皮质 (PFC) 和丘脑中,与认知能力下降有关. 这些领域更紧密的同步可能会恶化执行功能和流体智力.
科学领域:
- 神经科学是一个神经科学.
- 认知衰老研究 认知衰老研究
- 脑部成像 脑部成像
背景情况:
- 正常的衰老与结构性和功能性大脑变化有关,导致认知能力下降.
- 前额叶皮层 (PFC) 和皮下区域的异常与认知衰老有关.
- 同步的结构和功能大脑变化的精确影响在衰老期间的认知仍然不清楚.
研究的目的:
- 调查皮层和皮层下区域结构功能合 (SFC) 的与年龄相关的变化.
- 检查SFC和认知功能之间的关系,如执行功能和流体智力.
- 阐明SFC在调解与年龄相关的认知衰退中的作用.
主要方法:
- 利用3D T1加权结构性MRI和功能性MRI (看电影) 数据来自422名健康个体 (18-87岁).
- 通过测量灰色物质体积 (GMV) 和低频波动幅度 (ALFF) 之间的相似性来量化区域SFC.
- 分析了SFC与年龄相关的变化及其与认知表现的关联.
主要成果:
- 衰老与PFC,丘脑和尾状核中SFC增加有关.
- 相反,衰老导致皮质,侧皮质和皮质的SFC减少.
- PFC SFC与执行功能相关,而thalamus SFC与流体智力相关,部分介导认知衰退.
结论:
- 在PFC和thalamus中更紧密的结构-功能同步可能会导致与年龄相关的认知衰退.
- 这些发现提供了洞察力,对神经生物学基础的thalamo-prefrontal路径在认知衰老.
- 了解这些同步变化对于开发用于认知衰老的干预措施至关重要.
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