DME automatic analysis system of electrical jaw muscle activity during chewing: A comparison.

DME automatic analysis system of the jaw muscle activity during gum chewing was developed by aiming at obtaining higher efficiency and standardization of data analysis. The software was composed considering the actual process used in ordinary analysis: that is, the programs which were used to differentiate the onset and offset time of EMG burst were characteristically based on the differential values with the lapse of time of EMG envelope and MKG vertical movement per stroke.Thirteen normal subjects' EMGs were analysed by DME system and compared with ones obtained by manual measurement. Time and power coordination patterns showed no significant differences compared with ones based upon manually measured data, though burst duration and integrated value generally exceeded ones obtained by manual.In conclusion, the data obtained by this system in normal subjects were proved to be satisfactorily comparable with ones measured by manual.