Anordnung zur Aufzeichnung und sofortigen Interpretation der myoelektrischen Aktivität des Magens — Elektrogastrographie — Computer-aided Measurement and Interpretation of the Myoelectrical Activity of the Stomach

Abstract

Unlike other electrophysiological measurements such as electrocardiography (ECG) and electroencephalography (EEG), the cutaneous measurement of the electrical activity of the stomach (electrogastrography, EGG) is not an established clinical diagnostic procedure. To overcome common problems in acquiring very-low-frequency signals in the presence of large and unstable voltages we developed a real time data acquisition and analysis system based on linear-phase digital signal processing instead of analog filtering. FFT's computed on line from highly overlapping time sets are displayed as pseudo-3D or grey-scale graphic plots.