An approach for the task performance estimation using biological signals just before and after the onset of voluntary motion

In order to predict of accuracy of movement just before the onset of movement using biological signals, the relationships between MRCP measured as a physiological index and the accuracy of task performance were investigated. As experiments, subjects touched the target appearing 300 pixels away from a start point in a vertical direction on a touch-sensitive screen with the forefinger. During experiments, EEG, EMG as trigger, high-speed camera images, and task efficiency were acquired. As a result, significant differences between the high- and low-performance groups were clearly confirmed on the slope of NS in MRCPs. Furthermore, a difference between these groups was confirmed in duration of ballistic movement.