运动及想象运动时Mu波自相关研究

Mu Rhythm Auto-Correlative Research During Actual Movements and Motor Imagery

为寻找当受试者真实运动和想象运动时Mu波的自相关规律,收集了20位受试者(男女各十人)的C3,C4,T3,T4脑电极Mu波数据,通过实验分析发现如下规律:①无论真实手动或想象手动,男生的Mu波自相关系数普遍大于女生.②对于所有受试者左手真实手动的自相关系数普遍大于左手想象运动,但右手没有相应的规律.③仅仅通过比较自相关系数无法辨别想象运动的方向.本次实验也验证了"Mu波抑制"现象与受试者性别、惯用手有关联.

The purpose of the experiment is to find the auto-correlation of Mu wave when the subject performs motor act or motor imagery. 20 healthy subject Mu wave data（ 10 males and 10 females） are collected from the brain electrode C3,C4,T3 and T4. By calculating the autocorrelation coefficient of the Mu waves,it is found that（i） No matter actual hand movement or imagined hand movement,and most of the male＇s autocorrelation coefficients are higher than female＇s.（ii） The auto-correlation coefficient of actual left-hand movement is always higher than imagined left-hand movement,but it is not similar for the right-hand.（iii） the direction of motor imagery cannot be judged only through comparing the autocorrelation. Through the study,it is also proved that Mu suppression is related to gender and handedness.