On the possibility about performance estimation just before beginning a voluntary motion using movement related cortical potential

Abstract

The present study aimed to investigate this tripartite relationship, regarding MRCP as a physiological index, ballistic movement as an index of operation and accuracy of the task performance. Experiments were conducted 'reaching' task; the subject touches the target appears 300 pixels away from the start point in a vertical direction on the touch sensitive screen with the forefinger. During experiments, EEG, EMG as trigger, image by high-speed camera and the efficiency of task were acquired. As a result, significant differences between the high and poor performance groups were clear on the NS in MRCP acquired from Fz(p < 0.05), Cz (p < 0.05) and Pz (p < 0.05). Furthermore, the difference was confirmed on the duration of ballistic movement. Based on our findings, we attempted to extract MRCP rapidly and automatically without using signal averaging and discuss whether it is possible to estimate accuracy just before the motion is executed. © 2009 Springer Berlin Heidelberg.