[On the method of indirect electrogastrography and its diagnostic applicability (author's transl)]

The cutaneous recording of the gastric electrical activity according to the modified method of Sobakin was utilized. In fasting individuals changes in potential occured between 2 and 5 per min., in most of the cases after standard breakfast the frequency increased while lower amplitudes appeared. The frequency of electrical waves from the duodenum increased remarkably. It could be demonstrated that the peristalsis recorded by gastroscopy was synchronous with the electrogastrographic potentials. The applicability of the method for clinical diagnostic purposes is limited at the present time, because a "normal" electrogastrogram has not yet been established. Specific changes of the electrogastrogram have not been observed in various gastric diseases, which may be verified by routine diagnostic procedures.