A non invasive detection and analysis system of electrogastrogram(EGG) is described. The system consists of amplifiers, a 12 bit A/D convertor, a PC/AT computer and system softwares. The management system uses pull down menus of Chinese character, and can be operated conveniently by users to accomplish many functions, such as: data collection and storage,data analysis, waveform display and print out etc. The analysis software is built on the basis of multiphase analysis method ,which allows users to obta...