[Observation on electrogastrogram changes during parallel swing stimulation].

In order to study the relationship between cutaneous electrogastrogram (EGG) and nausea syndrome of the motion sickness, power spectrum analysis is used to analyze EGG recorded during motion sickness evoked by the parallel swing in 32 healthy men. 20 subjects showed a shift of Period Dominant Frequency (PDF) of EGG from Three CPM (2.40-3.70cpm) to Tachygastria (3.70-10.00cpm). PDF, the percentage of power of Tachygastria wave and Dominant Frequency Instability Coefficient significantly increased (P < 0.01). The incidences of nausea syndrome was obvious at the moment after swing. The result showed that EGG may be used for testing nausea symptoms of motion sickness.