记忆回忆期间的语言模式与成年期早期的tau负担有关
Christina B Young1, Viktorija Smith1, Cody Karjadi2
1Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, California, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|February 13, 2024
概括
记忆回忆期间细微的语言变化可能表明早期阿尔茨海默病的病理学. 语音模式,特别是停顿和节奏,与大脑中的陶积累相关,即使在认知健康的成年人中也是如此.
科学领域:
- 神经科学是一个神经科学.
- 认知老龄化 认知老龄化
- 语音分析 语言分析
背景情况:
- 早期的认知衰退可能是微妙的.
- 语音模式可能提供认知障碍的早期指标.
研究的目的:
- 为了研究语音标记在延迟回忆和大脑粉样蛋白和tau病理学在认知不受损的成年人之间的关联.
- 探索语音模式作为潜在的阿尔茨海默病早期生物标志物.
主要方法:
- 来自弗雷明汉心脏研究 (Framingham Heart Study) 的238名认知正常的成年人 (年龄在32-75岁之间) 接受了粉样蛋白和蛋白PET成像.
- 在故事记忆延迟回忆任务期间,使用五个语音标记器分析了语音模式.
- 研究了语音标记,全球粉样蛋白状况和区域信号之间的关联.
主要成果:
- 语音标记,如发言时间,暂停,语音速率和单词百分比与延迟回忆得分相关,尽管共享差异较低 (2%-15%).
- 延迟回忆得分在粉素阳性 (Aβ +) 和粉素阴性 (Aβ-) 组之间没有显著差异.
- 中间和新皮层区域的信号增加与更长的暂停和更慢的语音速度有关.
结论:
- 记忆回忆过程中细微的语音变化可能反映了早期阿尔茨海默病的病理学,特别是陶积累.
- 语音分析显示,在成年期检测与早期tau沉积相关的微妙认知变化的潜力.
- 语音标记可能比单独的延迟回忆得分更敏感,用于识别早期的病理变化.
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