Information Technology, Sri Krishna College of Engineering and Technology, Coimbatore, India.
Coimbatore Institute of Engineering and Technology, Narasipuram, India.
J Med Syst. 2018 Sep 11;42(10):193. doi: 10.1007/s10916-018-1062-y.
Meditation improves positivity in behavioral as well as psychological changes, which are brought elucidated by knowing neuro-physiological consequences of meditation. In the field of cognitive science, neuroscience and physiological research, Electroencephalogram (EEG) is extensively utilized. The primary tasks of EEG signal analysis is to identify the noisy signal as well as enormous data that create signal processing and subsequent analysis. Beforehand any analysis of the EEG signal, the obtained raw signal must be preprocessed for eliminating undesirable artifacts as well as horrible noise. With the aim of resolving this issue, in this research, raw signals are preprocessed with the help of Band-Pass Filter (BPF) for noise removal method. Instead, in adaptive Sliding Window with Fuzzy C Means Clustering (SW-FCM) segmentation is presented, which precisely as well as automatically segments the signals. So as to analyze the accuracy, five features such as electroencephalography alpha spectrum, frequency of the main peak, Amplitude of the main peak, Higher Order Crossing (HOC), and wavelet features are used as the evaluating variables. Lastly to assess the meditation experience with Fuzzy Kernel least square Support Vector Machine (FKLSSVM) classifier, the presented method with a cross-sectional analysis is utilized. These two classifiers are utilized for meditation experience classification by utilizing an individual feature vector values from equivalent EEG signals. The dataset samples are gathered from Open source Brain-Computer Interface (Open BCI) platform. Outcomes attained are matched up for diverse techniques for identifying as well as for classifying signal segments features using MATLAB. Presented classifiers of the meditation process validate quick interpretation methods that differentiate meditation experience and valuable performance related to artificial approaches for the big-data analysis.
冥想可改善行为和心理变化中的积极性,而了解冥想的神经生理后果则可以阐明这一点。在认知科学、神经科学和生理研究领域,脑电图(EEG)被广泛应用。EEG 信号分析的主要任务是识别噪声信号和大量数据,这些数据需要进行信号处理和后续分析。在对 EEG 信号进行任何分析之前,必须对获得的原始信号进行预处理,以消除不需要的伪影和可怕的噪声。为了解决这个问题,在这项研究中,原始信号借助带通滤波器(BPF)进行预处理,以去除噪声。相反,提出了自适应滑动窗口模糊 C 均值聚类(SW-FCM)分割,该方法可以精确且自动地分割信号。为了分析准确性,使用了五个特征,如脑电图阿尔法谱、主峰值频率、主峰值幅度、高阶交叉(HOC)和小波特征,作为评估变量。最后,使用模糊核最小二乘支持向量机(FKLSSVM)分类器评估冥想体验,使用横断面分析来评估提出的方法。这两个分类器用于通过使用来自等效 EEG 信号的单个特征向量值对冥想体验进行分类。数据集样本是从开源脑机接口(Open BCI)平台收集的。使用 MATLAB 对不同技术获得的结果进行了匹配,以识别和分类信号段特征。提出的冥想过程分类器验证了快速解释方法,这些方法可以区分冥想体验,并且与大数据分析的人工方法相比具有有价值的性能。