用脑电图区分冥想与静息状态,跨人泛化效果好。
Subject-independent Classification of Meditative State from the Resting State using EEG
- 用CSP+SVD提取特征,结合LSTM或浅层网络分类
- 跨人分类准确率达96.4%,接近最佳已有结果
- 适合脑机接口、冥想监测等需跨人通用的场景
尽管客观判断个体是否处于冥想状态有益,但多数现有研究仅在个体依赖条件下表现良好。本研究旨在利用脑电图(EEG)数据,以跨人方式区分拉吉瑜伽冥想状态与大脑静息状态。提出了三种架构:CSP-LDA 使用共空间模式(CSP)提取特征,线性判别分析(LDA)分类;CSP-LDA-LSTM 在此基础上引入长短期记忆网络(LSTM),将二分类问题建模为序列学习;SVD-NN 则采用奇异值分解(SVD)筛选关键信号成分,配合浅层神经网络(NN)分类。CSP-LDA-LSTM 在同人分类中达到98.2%准确率,而SVD-NN在跨人分类中达96.4%准确率,与文献中最佳同人结果相当。两种架构均能有效捕捉跨人不变的脑电特征,表现出强鲁棒性和泛化能力。
原文摘要 · Abstract (English)
While it is beneficial to objectively determine whether a subject is meditating, most research in the literature reports good results only in a subject-dependent manner. This study aims to distinguish the modified state of consciousness experienced during Rajyoga meditation from the resting state of the brain in a subject-independent manner using EEG data. Three architectures have been proposed and evaluated: The CSP-LDA Architecture utilizes common spatial pattern (CSP) for feature extraction and linear discriminant analysis (LDA) for classification. The CSP-LDA-LSTM Architecture employs CSP for feature extraction, LDA for dimensionality reduction, and long short-term memory (LSTM) networks for classification, modeling the binary classification problem as a sequence learning problem. The SVD-NN Architecture uses singular value decomposition (SVD) to select the most relevant components of the EEG signals and a shallow neural network (NN) for classification. The CSP-LDA-LSTM architecture gives the best performance with 98.2% accuracy for intra-subject classification. The SVD-NN architecture provides significant performance with 96.4\% accuracy for inter-subject classification. This is comparable to the best-reported accuracies in the literature for intra-subject classification. Both architectures are capable of capturing subject-invariant EEG features for effectively classifying the meditative state from the resting state. The high intra-subject and inter-subject classification accuracies indicate these systems' robustness and their ability to generalize across different subjects.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品;中文卡片由大模型生成,请以原文为准。