生物标志物 生物标志物
Jiahui Xu1, Zhixing Zhou2, Huanhuan Xia2
1University of Shanghai for Science and Technology, Shanghai, China.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
早期阿尔茨海默病的检测得到了改进,新的AI框架分析语音和文本. 这种多模式方法提供了一种具有成本效益和准确的方法来识别认知障碍,优于传统测试.
科学领域:
- 神经科学是一个神经科学.
- 人工智能的人工智能
- 计算语言学 计算语言学
背景情况:
- 阿尔茨海默病 (AD) 诊断至关重要,但目前的方法昂贵且难以获得.
- 由于主观和环境因素,非侵入性认知查缺乏准确性.
- 语言生物标志物分析为AD查提供了稳定和方便的替代方案.
研究的目的:
- 开发和验证用于早期认知障碍检测的多式人工智能框架.
- 利用变压器 (BERT) 的双向编码器表示和其他机器学习模型进行语音和文本分析.
- 确定与认知衰退相关的关键语言和声学生物标志物.
主要方法:
- 采用系统方法,区分认知障碍患者和健康对照者.
- 来自上海认知查 (SCS) 测试的语义特征和使用BERT和OpenSMILE的音频特征从300名受试者中提取.
- 一个CNN模型用于文本和五个模型 (RF,XGBoost等) 对于音频进行了培训,结果使用硬投票进行了融合,并使用特异性进行了评估.
主要成果:
- 多式联络框架实现了91.80%的准确性和91.85%的F1得分,明显超过了MoCA-Basic测试 (77.17%的准确性).
- 发现的关键生物标志物包括增加的暂停时间,声学特征的光谱变化以及文本中语义复杂性的降低.
- 该框架在区分认知障碍方面表现出高度可靠性和有效性.
结论:
- 拟议的多式模式框架为早期认知障碍检测提供了一种高度准确,具有成本效益和非侵入性的方法.
- 已识别的生物标志物提供了关于认知衰退早期功能缺陷的见解.
- 这种方法促进了对AD的理解,并促进了改进的查工具的开发.
相关概念视频
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Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
749
01:19Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers
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Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
516