基于经验小波变换域中节律的中心相关熵对正常和抑郁脑电信号进行分类。
Classification of normal and depressed EEG signals based on centered correntropy of rhythms in empirical wavelet transform domain.
作者信息
Akbari Hesam, Sadiq Muhammad Tariq, Rehman Ateeq Ur
机构信息
Department of Electrical and Electronic Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran.
Department of Electrical Engineering, The University of Lahore, Lahore, Pakistan.
出版信息
Health Inf Sci Syst. 2021 Feb 6;9(1):9. doi: 10.1007/s13755-021-00139-7. eCollection 2021 Dec.
A widespread brain disorder of present days is depression which influences 264 million of the world's population. Depression may cause diverse undesirable consequences, including poor physical health, suicide, and self-harm if left untreated. Depression may have adverse effects on the personal, social, and professional lives of individuals. Both neurologists and researchers are trying to detect depression by challenging brain signals of Electroencephalogram (EEG) with chaotic and non-stationary characteristics. It is essential to detect early-stage depression to help patients obtain the best treatment promptly to prevent harmful consequences. In this paper, we proposed a new method based on centered correntropy (CC) and empirical wavelet transform (EWT) for the classification of normal and depressed EEG signals. The EEG signals are decomposed to rhythms by EWT and then CC of rhythms is computed as the discrimination feature and fed to K-nearest neighbor and support vector machine (SVM) classifiers. The proposed method was evaluated using EEG signals recorded from 22 depression and 22 normal subjects. We achieved 98.76%, 98.47%, and 99.05% average classification accuracy (ACC), sensitivity, and specificity in a 10-fold cross-validation strategy by using an SVM classifier. Such efficient results conclude that the method proposed can be used as a fast and accurate computer-aided detection system for the diagnosis of patients with depression in clinics and hospitals.
当今一种广泛存在的脑部疾病是抑郁症,它影响着全球2.64亿人口。如果不加以治疗,抑郁症可能会导致各种不良后果,包括身体健康不佳、自杀和自我伤害。抑郁症可能会对个人的个人生活、社交生活和职业生活产生不利影响。神经学家和研究人员都在尝试通过挑战具有混沌和非平稳特征的脑电图(EEG)脑信号来检测抑郁症。早期检测抑郁症对于帮助患者及时获得最佳治疗以防止有害后果至关重要。在本文中,我们提出了一种基于中心核相关度(CC)和经验小波变换(EWT)的新方法,用于对正常和抑郁的EEG信号进行分类。通过EWT将EEG信号分解为节律,然后将节律的CC计算为判别特征,并输入到K近邻和支持向量机(SVM)分类器中。使用从22名抑郁症患者和22名正常受试者记录的EEG信号对所提出的方法进行了评估。在使用SVM分类器的10折交叉验证策略中,我们分别实现了98.76%、98.47%和99.05%的平均分类准确率(ACC)、灵敏度和特异性。如此高效的结果表明,所提出的方法可以用作临床和医院中诊断抑郁症患者的快速准确的计算机辅助检测系统。