Muscle activity observation device and muscle activity observation method

摘要

The muscle activity observation device (10) includes a sensor module (20) and a detection module (30). The sensor module (20) includes a piezoelectric sensor (21). The output of the piezoelectric sensor (21) changes due to the vibration of the tendon or muscle, and the output changes due to the expansion and contraction of the tendon or muscle. The detection unit (31) of the detection module (30) detects the activity state of the tendon or muscle by using the tremor signal and the expansion / contraction signal output from the piezoelectric sensor (21).