在健康的衰老,阿尔茨海默氏症和帕金森病的编码和维护工作记忆的过
Sofia Toniolo1,2, Robert Udale3,4, Verena Svenja Klar4
1Nuffield Department of Clinical Neurosciences, University of Oxford, New Radcliffe House, 1st Floor, Oxford, OX2 6GG, UK. sofia.toniolo@ndcn.ox.ac.uk.
Scientific reports
|May 7, 2025
概括
阿尔茨海默病 (AD) 和帕金森病 (PD) 患者,以及老年人 (EHC) 和年轻健康对照人 (YHC) 被研究工作记忆 (WM) 性能. 当维护期间存在分心因素时,AD患者表现出显著的过缺陷,与EHC和PD患者不同.
科学领域:
- 认知神经科学 认知神经科学
- 神经退行性疾病 神经退行性疾病
- 人类心理学 人类心理学
背景情况:
- 工作记忆 (WM) 对认知功能至关重要.
- 了解阿尔茨海默病 (AD) 和帕金森病 (PD) 等神经退行性疾病中的WM缺陷至关重要.
- 在WM中区分编码和维护阶段是理解任务需求的关键.
研究的目的:
- 调查编码与维护期间干扰因子对阿尔茨海默病 (AD),帕金森病 (PD) 患者,老年人 (EHC) 和年轻健康对照 (YHC) 的工作记忆 (WM) 性能的影响.
- 探索海马体积和WM过能力之间的关系.
- 在健康老龄化和神经退行性疾病中表征WM损伤的独特模式.
主要方法:
- 参与者 (每组n=28) 执行了一个在编码或维护期间呈现的分心器的WM任务.
- 箭头的方向是从一组两个或三个项目报告的.
- 获得MRI数据,包括海马体积;性能指标包括平均绝对误差,记忆精度,目标检测,错误结合和猜测.
主要成果:
- 老年健康对照 (EHC) 和帕金森病 (PD) 患者在编码和维护方面都表现出有效的过.
- 阿尔茨海默病 (AD) 患者在维护阶段特别表现出显著的过缺陷.
- 健康老龄化与WM记忆精度降低有关,而AD显示目标检测低,猜测增加;PD与更高的猜测率有关.
- 海马体积与维护期间的过相关,但不编码.
结论:
- 健康的衰老和神经退行性疾病呈现出工作记忆 (WM) 损伤的不同模式.
- 阿尔茨海默病 (AD) 的特点是维护期间过功能受损,与健康衰老或帕金森病 (PD) 不同.
- 海马体积与WM维护期间过干扰器的能力特别相关.
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