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Adaptive independent component analysis of multichannel electrogastrograms
Journal article   Peer reviewed

Adaptive independent component analysis of multichannel electrogastrograms

Hualou Liang
Medical engineering & physics, v 23(2), pp 91-97
2001
PMID: 11413061

Abstract

Stomach Blind source separation Independent Component Analysis Electrogastrogram
The electrogastrogram (EGG), a cutaneous measurement of gastric electrical activity, can be severely contaminated by endogenous biological noise sources such as respiratory signal. Therefore it is important to establish effective artifact removal methods. In this paper, a novel blind signal separation method with a flexible non-linearity is introduced and applied to extract the gastric slow wave from multichannel EGGs. Simulation results show that our algorithm is able to separate a wide range of source signals, including mixtures of Gaussian sources. On real data, we demonstrate the successful applications of our procedure to extract the gastric slow wave from multichannel EGGs. As a result, the extracted clean gastric slow wave can be used to facilitate further analysis, e.g. as a reference signal for multichannel adaptive enhancement of the EGG.

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15 citations in Scopus

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Web of Science research areas
Engineering, Biomedical
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