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Statistical Features Extraction for Multivariate Pattern Analysis in Meditation EEG using PCA

机译:使用PCA的冥想EEG在冥想脑电图中的统计特征提取

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This work was undertaken to study the specific statistical features of EEG data collected during meditation (Kriya Yoga) and normal conditions. The meditation practice changes the attentional allocation in the human brain to visualize this; statistical features are carefully calculated from different wavelet coefficients to categorize two diverse groups (i.e. Meditators and Non-Meditators). The entire time series of EEG data divided into overlapping segments, and statistical parameters calculated for each of these segments. Instead of using all the data points, we used only a few higher order statistical measures such as variance, kurtosis, relative band energy, Shannon entropy, and Renyi entropy obtained from the data segments. A standard clustering technique, i.e. Principal Component Analysis (PCA) used to get the distinct pattern from the statistical features in EEG. In this paper, we presented a clustering paradigm that used for the pattern analysis between meditators and non-meditators. We measured the EEG signal using 64 channels, with some peripheral physiological measures. 23 participants with varying experience in meditation practice and ten non-meditators (control group) are considered to visualize underlying clusters within the statistical features.
机译:本工作是在冥想(Kriya Yoga)和正常情况下收集的脑电图数据的具体统计特征。冥想实践会改变人大脑中的注意力分配,以使这一点可视化;从不同的小波系数仔细计算统计特征以对两个不同的组(即冥想器和非校长)进行分类。划分为重叠段的EEG数据的整个时间序列,以及针对每个段计算的统计参数。而不是使用所有数据点,我们只使用了几个高阶统计措施,如方差,kurtosis,相对频段能量,香农熵和从数据段获得的renyi熵。一种标准聚类技术,即用于从脑电图统计特征获取不同模式的主成分分析(PCA)。在本文中,我们提出了一种聚类范式,用于冥想器和非夹层之间的模式分析。我们使用64个通道测量EEG信号,具有一些外围生理措施。 23名参与者在冥想实践和十个非冥区(对照组)中的不同经验进行了视为在统计特征中可视化底层集群。

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