多チャンネル表面筋電図における伝播波の距離の検討

摘要

Potential of waves observed in a surface electromyogram (EMG) signal is summarized with a lot of motor unit action potentials. Therefore, we thought that we could discuss mechanism of muscle construction with separately observing characteristics of every conducting wave in surface EMG signals. In our previous study, we developed a judgment of conducting wave, that is, a method to extract conducting waves from multi-channel surface EMG signals over several adjacent channels with considering waveforms between adjacent channels. In this study, we proposed a new judgment of conducting wave with considering not only waveforms but also conductive wave distance. We discussed a usability of the new judgment by means of observing the characteristics of conducting waves.%表面筋電図で観測される波の電位は，筋肉内の多数の運動単位で生じた活動単位が加重したものである.従って，多チャンネル表面筋電図における全ての伝播波の特徴を個別に観察することによって，筋収縮メカニズムを検討できると考えた.先行研究では，隣接チャンネル間の波形形状を考慮して，多チャンネル表面筋電図から多チャンネルに渡り伝播波として抽出する手法を開発した.本研究では，新たに伝播距離も考慮に加えた伝播波を抽出する手法を提案した.そして，伝播波の特徴を観察することで，新たな提案手法の有用性を検討した.