临床表现 临床表现
Yingxin Mi1, Changming Wang2, Lei Liu1
1Department of Neurology & Innovation Center for Neurological Disorders, Xuanwu Hospital, Capital Medical University, National Center for Neurological Disorders, Beijing, Beijing, China.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
面部处理缺陷,包括表观,是阿尔茨海默病 (AD) 连续性的早期指标,即使在轻度认知障碍 (MCI) 阶段也可以检测到. 我们的研究突出了潜在的早期干预目标,通过分析面部感知和记忆,使用封闭面部延迟匹配范式 (OFDM).
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 神经学 神经学
背景情况:
- 面部失明 (prosopagnosia) 是中度至重度阿尔茨海默氏症 (AD) 的常见症状,严重影响日常生活.
- 了解AD中面部感知和记忆缺陷的进展对于早期诊断和干预至关重要.
- 健康衰老,轻度认知障碍 (MCI) 和AD中面部处理障碍背后的神经机制需要进一步研究.
研究的目的:
- 通过封闭面部延迟匹配范式 (OFDM) 调查面部感知和记忆的进展.
- 探索AD连续体 (健康衰老,MCI,AD) 面部处理缺陷的潜在神经机制.
- 在面部处理能力中识别AD检测的潜在早期生物标志物.
主要方法:
- 180名参与者 (60个认知正常,69个MCI,51个AD) 接受了OFDM任务与电脑电图 (EEG) 记录相结合.
- 脑电图捕获了面部编码,维护和检索的时间动态.
- 分析了神经心理评估和脑脊液 (CSF) 的粉样蛋白和标记物.
主要成果:
- 在OFDM任务中的行为表现显示,健康老龄化,MCI和AD组的行为表现显著下降 (AUC = 0.79).
- 在阿尔茨海默病患者中,EEG揭示了早期面部处理缺陷 (P1,N170) 和面部记忆 (NSW) 的损害.
- 患有MCI的患者早期表现出面部编码/感知缺陷 (P1,N170),但保留了更高水平的面部处理和记忆方面,具有改变的和α频段活性.
结论:
- OFDM任务有效地区分认知障碍阶段,识别面部处理缺陷作为AD连续性的早期指标.
- 患有MCI的患者早期表现出面部处理障碍,这表明早期治疗干预的潜力.
- 神经相关物,包括和α频段活动,与MCI和AD的面部感知和记忆障碍有关.
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