通过 EEG的测试，探讨青少年女子气手枪运动员不同环数击发前左、右颞区（T7和T8）、枕叶中线（Oz ）、运动区（Cz ）的α波功率和额叶中线（Fz ）的θ波功率变化特征。研究发现：1）运动员在安静闭眼、睁眼状态下，左、右颞区（T7、T8）的α波功率值没有显著性差异；2）在击发前3 s ，运动员左颞区（T7）的α波功率值显著高于右颞区（T8）的值；3）在击发前3 s ，运动员枕叶中线（Oz ）的α波脑电功率值呈上升趋势，其中，击发前倒数第3 s的值显著低于倒数第2 s的值；4）在击发前3 s ，运动员10环的额叶中线（Fz ）θ波功率值显著高于8环的值。%This study focused on the characteristics of Pre‐shot EEG during female adolescent air‐pistol shooting .The log‐transformed alpha wave power spectral estimates from best shots and worst shots was compared at sites T7 ,T8 ,Cz ,Oz and the log‐transformed theta wave power spectral estimates at sites Fz also was compared .The result reveals that 1 ) The log‐transformed alpha wave power spectral estimates of shooters’ during the resting period with eye opened or closed was not significantly different at site T7 and T8 .2 ) Over an 3‐s period preceding the trigger pull ,the log‐transformed alpha wave power spectral estimates at sites T8 is significant lower than that of at sites T7 during shooting .3 ) Over an 3‐s period preceding the trigger pull ,the log‐transformed alpha wave power spectral estimates at sites OZ was grad‐ually increased ,the alpha power from 3 seconds preceding the trigger to the time of the trigger is significant lower than that of last 2 seconds .4) the log‐transformed theta wave power spec‐tral estimates of the 10‐score shots was higher than that of the 8‐score shots .
展开▼
