临床表现 临床表现
Catherine Bosyj1, Kristoffer Romero1, Ana Badal2
1University of Windsor, Windsor, ON, Canada.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
轻度认知障碍 (MCI) 亚型显示不同的记忆策略使用. 非amnestic MCI 患者使用的时间连续性较少,而amnestic MCI 患者有时使用的时间连续性不足.
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
- 神经学 神经学
背景情况:
- 神经心理学测试策略提供了神经退行性疾病中认知衰退的敏感测量方法.
- 时间连续性和语义聚类是单词列表学习任务中的关键回忆策略.
- 轻度认知障碍 (MCI) 亚型之间使用策略的差异及其与语义策略的关系仍然不清楚.
研究的目的:
- 为了比较时间连续性和语义聚类策略在无记忆性MCI (aMCI),非无记忆性MCI (naMCI) 和对照组.
- 调查时间连续性和记忆回忆中的语义聚类之间的关系.
- 确定特定的回忆策略与MCI亚型认知表现之间的关联.
主要方法:
- 分析了194名患者的卡普兰-贝克雷斯特神经认知评估的Word-List子测试的回忆数据.
- 计算时间连续性得分,基于连续回忆单词之间的延迟.
- 通过连续回忆分类相关单词来量化语义聚类,控制偶然性.
主要成果:
- 与对照组相比,非记忆障碍的MCI患者使用时间连续性显著减少 (p=0.02).
- 无名的MCI患者利用了时间连续性,但它与较差的即时回忆有关.
- 语义聚类与对照组和aMCI患者的更好的立即和延迟回忆有关.
结论:
- 时间连续性可能是个MCI的个体的一个不理想的召回策略.
- 患有aMCI和完整的语义处理的人可以通过使用语义策略来保持记忆性能.
- 在MAMCI中,减少时间连续性的使用可能反映了前额记忆组织能力受损.
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