作为唐氏综合征成年人的认知能力指数的不匹配负面性
Fedal Saini1, Fabio Masina2, Jasmine Wells1
1Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology & Neuroscience, King's College London, 16 De Crespigny Park, London SE5 8AB, UK.
Cerebral cortex (New York, N.Y. : 1991)
|July 4, 2023
概括
没有阿尔茨海默病 (AD) 的唐氏综合征 (DS) 的成年人的不匹配负面性 (MMN) 显示,与记忆力下降相关的幅度减少,与更广泛的认知缺陷相关的延迟时间更长. 在DS中,MMN可以作为认知指数.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 遗传学 是一个遗传学.
背景情况:
- 唐氏综合征 (DS) 对早期阿尔茨海默病 (AD) 的风险显著增加.
- 了解阿尔茨海默氏症前的认知变异性对于跟踪认知衰退至关重要.
- 不匹配负面性 (MMN) 反映了听觉变化检测,并与记忆和认知功能有关.
研究的目的:
- 调查MMN,年龄和DS成年人的认知能力之间的关系.
- 在没有临床AD诊断的DS个体中评估MMN特征.
- 探索MMN作为DS患者认知功能的潜在生物标志物.
主要方法:
- 一个被动的听觉奇怪的任务被管理到27个成年人与DS (17-51岁).
- 记录了与事件相关的潜力 (ERP),特别是MMN.
- 评估了包括记忆,语言和注意力在内的认知功能.
主要成果:
- 在18名参与者中观察到高达41岁的显著MMN,延迟时间比典型的更长.
- 减少的MMN振幅与较低的记忆分数相关.
- 较长的MMN延迟与较差的记忆,语言能力和注意力有关.
结论:
- MMN的幅度和延迟与DS成年人的认知表现有明显的关联.
- MMN可以作为DS患者认知能力的宝贵神经生理指数.
- MMN 延迟可能与语音处理有关,而振幅可能反映了与AD相关的记忆变化.
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