Enhanced Active Segment Selection for Single-Trial EEG Classification

被引：22

作者：

Hsu, Wei-Yen ^{[1
,2
]}

机构：

[1] Taipei Med Univ, Grad Inst Biomed Informat, Taipei 110, Taiwan

[2] Natl Chung Cheng Univ, Dept Informat Management, Taipei, Taiwan

来源：

CLINICAL EEG AND NEUROSCIENCE | 2012年 / 43卷 / 02期

关键词：

brain-computer interface (BCI); electroencephalogram (EEG); active segment selection; wavelet transform; modified fractal dimension; support vector machine (SVM); BRAIN-COMPUTER INTERFACE; HOPFIELD NEURAL-NETWORK; FRACTAL FEATURES; SYNCHRONIZATION; TRANSFORM; IMAGES;

D O I：

10.1177/1550059412445051

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

In this study, an electroencephalogram (EEG) analysis system is proposed for single-trial classification of both motor imagery (MI) and finger-lifting EEG data. Applying event-related brain potential (ERP) data acquired from the sensorimotor cortices, the system mainly consists of three procedures; enhanced active segment selection, feature extraction, and classification. In addition to the original use of continuous wavelet transform (CWT) and Student 2-sample t statistics, the two-dimensional (2D) anisotropic Gaussian filter further refines the selection of active segments. The multiresolution fractal features are then extracted from wavelet data by using proposed modified fractal dimension. Finally, the support vector machine (SVM) is used for classification. Compared to original active segment selection, with several popular features and classifier on both the MI and finger-lifting data from 2 data sets, the results indicate that the proposed method is promising in EEG classification.

引用

页码：87 / 96

页数：10

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