Abstract
Electrode is installed in each of the sciatic nerve (Biceps femoris nerve, Common peroneal nerve, and Tibial nerve) divided into three so that the action potential that generated when rats move the hind limb is measured. When parameters of the measured action potential (Activity time, Max potential,Min potential, and Potential difference) were compared, the parameters of the action potential measured from three nerves were same range. The frequency distributions that result of analysing the action potential by FFT are similar in the three nerves. It is thought that the action potential of similar parameters is used to control the operation of the joint regardless of which joint it is.