Gao Ansheng, Luo Yangyu, Chen Ken
Departmnent of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, Citina.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi. 2008 Jun;25(3):497-501.
Independent component analysis (ICA) is a statistic technique which extracts independent components from a set of standard signals. Since Electroencephalogram (EEG) signals are the mixture of several relatively independent sources, ICA has attracted extensive attention in the field of EEG processing. In this paper, a new Constrained ICA (cICA) algorithm is introduced, it would solve the problem of orderless output when FastICA algorithm is used. The experiment results testify that the cICA algorithm can reduce the effect of different individual when the artifacts of EEG are removed manually. The results also show that the cICA algorithm is robust and performs faster convergence.
独立成分分析(ICA)是一种从一组标准信号中提取独立成分的统计技术。由于脑电图(EEG)信号是多个相对独立源的混合信号,ICA在EEG处理领域引起了广泛关注。本文介绍了一种新的约束ICA(cICA)算法,它将解决使用FastICA算法时输出无序的问题。实验结果证明,在手动去除EEG伪迹时,cICA算法可以降低个体差异的影响。结果还表明,cICA算法具有鲁棒性且收敛速度更快。