实践使人变得不完美:在患上阿尔茨海默病的高风险人群中,对实践的隐性干扰更强
Shao-Min Hung1,2,3, Sara W Adams3, Cathleen Molloy4
1Waseda Institute for Advanced Study, Waseda University, Tokyo, Japan.
bioRxiv : the preprint server for biology
|June 9, 2023
概括
早期阿尔茨海默氏症风险检测使用行为生物标志物. 注意力对高风险个体的认知干扰的影响不同,显示早期的认知变化.
科学领域:
- 认知神经科学 认知神经科学
- 神经学 神经学
背景情况:
- 早期发现阿尔茨海默病 (AD) 风险对于及时干预至关重要.
- 行为生物标志物为认知衰退提供了可访问的查方法.
- 之前的研究将高AD风险 (通过脑脊髓液粉样蛋白/tau比率表示) 与注意力变化和隐性干扰联系起来.
研究的目的:
- 调查注意力如何调节对阿尔茨海默病高风险和低风险个体的隐性干扰.
- 探索实践对不同风险群体隐性干扰效应的影响.
- 在临床前的AD中识别与注意力相关的早期认知差异.
主要方法:
- 分析了两项涉及高风险和低风险个体的连续实验.
- 在高功耗任务中对隐性干扰的评估.
- 对干扰的实践影响的检查.
- 在任务切换期间,在低风险的参与者中,隐性干扰和电脑电图 (EEG) 相关的非同步 (ERD) 之间的相关性分析.
主要成果:
- 高风险和低风险两组都显示出显著的实践效应.
- 实践与干扰之间的关系有所不同:在高风险个体中,增加的实践与更多的干扰相关,但在低风险个体中,干扰较少.
- 低风险个体在从高负载任务过渡到低负载任务时,表现出隐性干扰和EEGαERD之间的正相关性.
结论:
- 注意力显著调节隐性干扰,揭示了阿尔茨海默病高风险个体的独特认知模式.
- 这些发现突出了早期,微妙的认知差异,在显著下降之前可以检测到.
- 行为和神经生理学标记可以区分与阿尔茨海默氏症风险相关的认知功能.
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