Development of MMG/EMG Hybrid Transducer System with simultaneous five-channel measurement

Abstract

By simultaneously measuring Mechanomyoram (MMG) and Electromyogram (EMG), it is possible to accurate assessment of skeletal muscle contraction. However, MMG measurement has been rarely used for reasons such as having to fix body. Therefore, the authors developed MMG/EMG hybrid transducer system. The device was small and light (47x34x24 mm, 34 g). It was capable of MMG/EMG measurement without requiring any accessory, because sensor section, transducer and storage were integrated. Attachment to the skin was used a dedicated belt conforming to device shape. In addition, hybrid transducer was communicated with operation terminal via Bluetooth(R), and measurement control software collectively controlled five hybrid transducers and could set measurement parameters such as sampling time. MMG/EMG waveforms were monitored in real-time, and data were output in CSV format. By MMG/EMG hybrid transducer system, everyone could simply measure regardless of any field. ACKNOWLEDGEMENT: This research was partially supported by Okayama Prefecture.