论文标题
情绪识别的拓扑脑电图非线性动力学分析
Topological EEG Nonlinear Dynamics Analysis for Emotion Recognition
论文作者
论文摘要
在最近的研究中,通过探索脑电图(EEG)特征的情绪认识已广泛进行。用于理解复杂动力学现象的非线性分析和特征提取方法与不同情绪的脑电图模式有关。相空间重建是一种典型的非线性技术,可揭示大脑神经系统的动力学。最近,拓扑数据分析(TDA)方案已被用来探索空间的属性,该方案提供了一个有力的工具来思考相位空间。在这项工作中,我们使用相空间重建(PSR)技术提出了一种拓扑EEG非线性动力学分析方法,将EEG时间序列转换为相空间,并且持续的同源性工具探索了相位空间的拓扑特性。我们对不同节奏频段中的脑电图信号进行拓扑分析,以构建情感特征向量,从而表现出很高的显着能力。我们使用两个著名的基准数据集(DEAP和Dreamer数据集)评估了该方法。识别结果的唤醒和价值分类任务的准确性为99.37%和99.35%,分别在唤醒,价,价,价值和优势分类任务中,与Dreamer一起进行了99.96%,99.93%和99.95%。表演应该超过梦中的最新方法(提高1%到10%取决于时间长度),而与DEAP评估的其他相关作品相当。拟议的工作是针对情绪识别的EEG拓扑特征分析的首次研究,该研究带来了对脑神经系统非线性动力学分析和特征提取的新见解。
Emotional recognition through exploring the electroencephalography (EEG) characteristics has been widely performed in recent studies. Nonlinear analysis and feature extraction methods for understanding the complex dynamical phenomena are associated with the EEG patterns of different emotions. The phase space reconstruction is a typical nonlinear technique to reveal the dynamics of the brain neural system. Recently, the topological data analysis (TDA) scheme has been used to explore the properties of space, which provides a powerful tool to think over the phase space. In this work, we proposed a topological EEG nonlinear dynamics analysis approach using the phase space reconstruction (PSR) technique to convert EEG time series into phase space, and the persistent homology tool explores the topological properties of the phase space. We perform the topological analysis of EEG signals in different rhythm bands to build emotion feature vectors, which shows high distinguishing ability. We evaluate the approach with two well-known benchmark datasets, the DEAP and DREAMER datasets. The recognition results achieved accuracies of 99.37% and 99.35% in arousal and valence classification tasks with DEAP, and 99.96%, 99.93%, and 99.95% in arousal, valence, and dominance classifications tasks with DREAMER, respectively. The performances are supposed to be outperformed current state-of-art approaches in DREAMER (improved by 1% to 10% depends on temporal length), while comparable to other related works evaluated in DEAP. The proposed work is the first investigation in the emotion recognition oriented EEG topological feature analysis, which brought a novel insight into the brain neural system nonlinear dynamics analysis and feature extraction.