[Characteristics of the motor activity of the stomach according to cutaneous electrogastrographic and balloon mechanographic findings].

Slow electrical potentials recorded from the stomach projections on extremities in dogs seems to be, in fact, the electrogastrogram reflecting major electrical events in different portions of the stomach. No constant correlation was revealed between the mechanical and electrical activities of the stomach. The electrogastrogram, being an expression of electrical activity of the smooth muscles of the stomach wall, can be permanently recorded, keeping at that a constant rhythm while changing its amplitude within comparatively narrow limits. The mechanogram, only reflecting coordinated contractions of the stamch muscles, is quite variable both in its amplitude and in the number of actual contractions.