Firstly,we have conducted experiments of operating a joystick to the sound.Test subjects listen to white noise with square envelope.and the white noise that sound level fluctuates on sinusoidal wave.During the experiment,operating force of the joystick and integrated electromyogram(IEMG) were measured.In this experiment,we showed that IEMG has better characteristics than force operating joystick.Next,we investigated the influence of the visual stimulus of bar moving periodically up and down.Compared to the visual stimulus,sound stimulus showed good characteristics.