Digestive Diseases and Sciences

, Volume 25, Issue 3, pp 179–187 | Cite as

What is measured in electrogastrography?

  • A. J. P. M. Smout
  • E. J. Van Der Schee
  • J. L. Grashuis
Original Articles


The object of this study was to elucidate what is actually measured in electrogastrography. Comparison of gastric signals simultaneously recorded from serosal and cutaneous electrodes in the conscious dog led to the following findings: 1. In the absence of phasic contractile activity and electrical response activity (ERA), the cutaneous recordings contained a frequency corresponding to the fundamental frequency of the electrical control activity (ECA) of the stomach (about 0.08 Hz). 2. Tachygastrias gave rise to cutaneous signals containing the tachygastric frequency (about 0.25 Hz). 3. The amplitude of the electrogastrogram increased when ERA occurred. It is concluded that both ECA and ERA are reflected in the electrogastrogram. A model is proposed that describes the electrogastrogram as the result of field potentials generated by depolarization and repolarization dipoles.


Public Health Control Activity Fundamental Frequency Field Potential Response Activity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Digestive Disease System. Inc 1990

Authors and Affiliations

  • A. J. P. M. Smout
    • 1
  • E. J. Van Der Schee
    • 1
  • J. L. Grashuis
    • 1
  1. 1.Department of Medical Technology, Faculty of MedicineErasmus UniversityRotterdamThe Netherlands

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