Evaluation of motor preparatory activity in manual control using the measurement of ERP

To examine the relationship between the Event-Related Potential (ERP) and the changes of EMG in the right hand of observers in manual control, it was measured the physiological responses of EEG and EMG when steering a wheel to handle the object through the gate as the task. In the results, there are the negative slopes of ERP before steering the wheel. At first, the potentials rise gradually negative (N1) and change rapidly (N2) to the peak at the time of steering the wheel. It is suggested that N1 is the preparatory activity to steer the wheel and N2 is the activity to exercise the muscle in motor preparation from the relationship between the start points of N1, N2, and the responses of EMG, and the amount of steering the wheel with the time lag.