用语音特征区分帕金森患者,准确率超90%
Distinguishing Parkinson's Patients Using Voice-Based Feature Extraction and Classification
- 提取19个语音特征,分析帕金森患者与健康人差异
- 3层神经网络分类准确率达92.4%,优于传统算法
- 适合医学辅助诊断与远程监测场景
帕金森病(PD)是一种进行性神经退行性疾病,影响运动功能和言语特征。本研究通过提取和分类语音特征,区分帕金森患者与健康对照组。患者分为服药状态(Med On)和未服药状态(Med Off)。数据集包含在法蒂尔大学神经科使用H1N Zoom麦克风录制的语音样本,参与者朗读指定文本。从帕金森患者和健康对照组的语音中提取了19个关键特征,包括颤动(jitter)、亮度、过零率(ZCR)、均方根能量(RMS)、熵、偏度和峰度。这些特征被可视化并进行统计分析,以识别帕金森患者的独特模式。利用MATLAB的Classification Learner工具箱,应用多种机器学习分类算法,实现了显著的分类准确率。同时,比较了3层人工神经网络架构与经典机器学习算法的性能。研究结果表明,结合非侵入性语音分析与机器学习,有望实现帕金森病的早期检测与动态监测。未来研究可通过优化特征选择和探索先进分类技术进一步提升诊断精度。
原文摘要 · Abstract (English)
Parkinson's disease (PD) is a progressive neurodegenerative disorder that impacts motor functions and speech characteristics This study focuses on differentiating individuals with Parkinson's disease from healthy controls through the extraction and classification of speech features. Patients were further divided into 2 groups. Med On represents the patient with medication, while Med Off represents the patient without medication. The dataset consisted of patients and healthy individuals who read a predefined text using the H1N Zoom microphone in a suitable recording environment at Fırat University Neurology Department. Speech recordings from PD patients and healthy controls were analyzed, and 19 key features were extracted, including jitter, luminance, zero-crossing rate (ZCR), root mean square (RMS) energy, entropy, skewness, and kurtosis.These features were visualized in graphs and statistically evaluated to identify distinctive patterns in PD patients. Using MATLAB's Classification Learner toolbox, several machine learning classification algorithm models were applied to classify groups and significant accuracy rates were achieved. The accuracy of our 3-layer artificial neural network architecture was also compared with classical machine learning algorithms. This study highlights the potential of noninvasive voice analysis combined with machine learning for early detection and monitoring of PD patients. Future research can improve diagnostic accuracy by optimizing feature selection and exploring advanced classification techniques.
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