在主观认知衰退中,大脑功能连接的改变及其认知相关性
Shaochun Huang1, Siyu Wang2, Zigang Che3
1Department of Rehabilitation, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China.
Frontiers in neuroscience
|August 16, 2024
概括
主观认知衰退 (SCD) 涉及到大脑连接的广泛变化,特别是在叶. 在SCD中,特定的功能连接模式的改变可能成为阿尔茨海默病风险的早期生物标志物.
科学领域:
- 神经成像是一种神经成像.
- 认知神经科学 认知神经科学
- 阿尔茨海默氏症疾病研究研究
背景情况:
- 主观认知衰退 (SCD) 是早期阶段,表明阿尔茨海默病 (AD) 的风险增加.
- 传统的基于种子的功能连接 (FC) 分析显示了SCD个体的偏差.
- 全脑协会研究 (BWAS) 提供了一种不偏见的方法来调查SCD中的FC变化.
研究的目的:
- 通过全脑关联研究 (BWAS) 研究主观认知衰退 (SCD) 患者的无偏变异功能连接 (FC).
- 确定SCD中改变的FC和认知功能之间的关联.
- 为了确定潜在的神经成像生物标志物用于早期AD检测.
主要方法:
- 用关联度 (MA) 分析来确定具有FC变化的显著voxels.
- 根据MA结果确定了感兴趣的地区 (ROI),随后进行了ROI智能的FC分析.
- 相关性分析检查了已识别的FC电路与认知表现之间的关系.
主要成果:
- 在MA分析中,发现了10个ROI,其中SCD中的voxels显著变化.
- 对投资回报率的 FC 分析显示了 14 个加强的 FC 连接,主要涉及头顶 - 尾区域.
- 特定的FC变化与执行功能和情节性记忆正相关.
结论:
- 主观认知衰退 (SCD) 的特点是多焦点障碍,显着涉及默认模式网络 (DMN) 和叶.
- 跨半球的FC变化表明SCD的内部交互性损伤模式.
- 特定的头和顶区域之间的改变FC可以作为SCD诊断和AD风险评估的潜在生物标志物.
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