临床表现 临床表现
Matteo De Marco1, Sonia Di Tella2, Laura M Wright3
1Brunel University London, Uxbridge, Middlesex, United Kingdom.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
患有轻度认知障碍和阿尔茨海默氏症痴呆症 (MCI/AD) 个体在类流利性 (CF) 测试中表现出较低的集群和切换能力. 这些发现表明MCI/AD的语义处理和控制受损.
科学领域:
- 神经心理学 神经心理学
- 认知神经科学 认知神经科学
- 老年学是一门学科.
背景情况:
- 轻度认知障碍和阿尔茨海默氏症痴呆症 (MCI/AD) 影响认知功能,包括语言和执行功能.
- 类别流利性 (CF) 绩效是评估语义记忆和执行控制的敏感指标.
- 在CF期间的聚类和切换能力是语义处理效率的关键指标.
研究的目的:
- 在CF任务中对患有MCI/AD的成年人进行集群和切换能力的表征进行元分析.
- 将MCI/AD患者的表现与认知健康的对照人进行比较.
- 确定影响MCI/AD中CF表现的潜在调节因素.
主要方法:
- 在多个科学数据库中进行了全面的文献搜索.
- 使用元分析模型来分析29项选定的研究的数据,将MCI/AD个体 (n=1,778) 与对照组 (n=3,632) 进行比较.
- 平均集群大小 (MCS) 和交换机数 (NOS) 被提取为主要结局,年龄,教育和迷你精神状态检查 (MMSE) 分数作为调节者.
主要成果:
- 与对照组相比,患有MCI/AD的个体的平均群体大小显著较小 (G=0.30,p<0.001).
- 在CF任务中,MCI/AD组表现出明显较少的开关 (G=0.85,p<0.001).
- 标准CF计数和MMSE得分是影响大小的显著负预测指标,表明得分较低的表现较差.
结论:
- 流利性 (CF) 类别的平均集群大小 (MCS) 和开关数量 (NOS) 在MCI/AD患者中显著减少.
- 这些发现凸显了MCI/AD中自动语义处理 (集群) 和受控执行功能 (交换) 的缺陷.
- 量化MCS和NOS可以帮助评估MCI/AD患者在临床环境中的语义处理缺陷.
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