Research has shown that although one brainwave state may predominate at any given time, depending on the activity level of the individual, the remaining three brain states are present in the mix of brainwaves at all times.

• 研究表明根据人的不同活动水平，尽管在任意给定的时间内一种脑电波状态占据优势，其他三种脑电波状态也会一直混合存在着。