[Estimation of evoked potentials based on MD criterion and Givens matrix in non-Gaussian noise environments].
Traditional EP analysis is developed under the condition that the background noises in EP are Gaussian distributed. Alpha stable distribution, a generalization of Gaussian, is better for modeling impulsive noises than Gaussian distribution in biomedical signal processing. Conventional blind separation and estimation method of evoked potentials is based on second order statistics (SOS). In this paper, we propose a new algorithm based on minimum dispersion criterion and Givens matrix. The simulation experiments show that the proposed new algorithm is more robust than the conventional algorithm.
Zha
Daifeng
D
College of Electronic Engineering, Jiujiang University, Jiujiang 332005, China. zhadaifeng@163.com
Gao
Yubao
Y
Xiong
Meiying
M
Wu
Liangdan
L
Qiu
Tianshuang
T
D000465:Algorithms; D016477:Artifacts; D001921:Brain / Q000502:physiology; D004569:Electroencephalography / Q000379:methods*; D005071:Evoked Potentials / Q000502:physiology*; D006801:Humans; D016011:Normal Distribution; D012815:Signal Processing, Computer-Assisted