PROBLEM TO BE SOLVED: To provide a muscle state measuring sheet which can detect amplitude and latency of induction electromyogram EMG or induction muscle sound MMG quantitatively, and can evaluate active state of muscle precisely.SOLUTION: Because one set of stimulating electrodes and all myoelectricity detection electrodes face to back face of an insulating sheet across an appointed spacing and adhere to a body surface of muscle, relative position of electrical stimulation position and the myoelectricity detection electrode is fixed, and amplitude and latency of induction electromyogram EMG can be detected quantitatively without depending on stimulating position of electrical stimulation signal.SELECTED DRAWING: Figure 1【課題】誘発筋電図ＥＭＧ若しくは誘発筋音図ＭＭＧの振幅や潜時を定量的に検出して正確に筋の活動状態を評価できる筋状態測定シートを提供する。【解決手段】一組の刺激電極と全ての筋電検出電極が所定間隔を隔てて絶縁シートの背面に臨んで筋の体表面に密着するので、電気刺激位置と筋電検出電極の相対位置が一定で、誘発筋電図ＥＭＧの振幅や潜時が電気刺激信号の刺激位置に依存せずに定量的に検出できる。【選択図】図１
