Detection and deletion of motion artifacts in electrogastrogram using feature analysis and neural networks

J. Liang, J. Y. Cheung, Jiande Chen

Research output: Contribution to journalArticle


Electrogastrogram is a surface measurement of gastric myoelectrical activity, and electrogastrography has been an attractive method for physiological and pathophysiological studies of the stomach due to its noninvasive nature. Motion artifacts, however, ruin the electrogastrogram (EGG), and make the analysis very difficult and sometimes even impossible. They must be eliminated from EGG signals before analysis. Up to now, this can only be done by visual inspection, which is not only time-consuming but also subjective. In this study, a method using feature analysis and neural networks has been developed to realize automatic detection and elimination of the motion artifacts in EGG recordings by computer. Experiments were conducted to investigate the characteristics of different motion artifacts. Useful features were extracted, and different combinations of the features used as the input of the neural network were compared to obtain the optimal performance for the detection of motion artifacts using the artificial neural network.

Original languageEnglish (US)
Pages (from-to)850-857
Number of pages8
JournalAnnals of Biomedical Engineering
Issue number5
Publication statusPublished - Sep 1997
Externally publishedYes



  • Artificial neural networks
  • Electrogastrography
  • Spectral analysis

ASJC Scopus subject areas

  • Biomedical Engineering

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