Position sense and state of contraction; the effects of vibration

摘要: The position sense of the knee joint was investigated in normal subjects lying supine with both legs hanging freely. Three different manoeuvres were used to bring one leg into an extended position: voluntary activation quadriceps muscle, reflex (TVR) and passive lifting leg. For each manoeuvre indicated other limb their perception position. It found that produced by contraction correctly perceived, TVR underestimated, overestimated. findings indicate receptors muscles may be judge addition effort. are supported repeated observations muscle vibration can cause movement-illusions during isometric conditions.