Influence of upper extremity position on EMG signal measures calculated in time, frequency and time-frequency domains.
نویسندگان
چکیده
The aim of this study was to investigate the relationship between time-frequency, time and frequency measures when considering various upper extremity positions below the level of the shoulder and in trapezius as well as deltoideus muscles. During the experiment, 15 subjects performed a task that involved screwing and unscrewing a screw cap on a board in six different locations, i.e., there were six upper extremity positions. Variables were calculated in the time, frequency and time-frequency domains on a recorded EMG signal. The results showed that parameters analyzed in the time-frequency domain were more sensitive to changes in position than parameters analyzed in the frequency domain.
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عنوان ژورنال:
- Acta of bioengineering and biomechanics
دوره 15 4 شماره
صفحات -
تاریخ انتشار 2013