脑电活动有可能客观地揭示有指向性的、有选择性的、注意的特殊形式。如表象竞赛是指被试的运动员想象自己比赛时的最佳竞技状态,此时,我们将他们表象竞赛时的大脑生物电活动通过脑电图仪描记下来,以电信号的形式体现大脑的机能状态。用EEG的Alpha波指数作为反映集中注意,判断运动能力的生理指标。 EEG activity may objectively reveal the directional, selective, attention to the special form. For example, the appearance contest means that the tested athletes imagine the best athletic performance when they are playing. At this moment, we describe the brain bioelectrical activities during the appearance of the contest through the electroencephalograph and express the function of the brain in the form of electrical signals status. The Alpha Wave Index of EEG is used as a physiological indicator to reflect concentration and exercise ability.