First the electroencephalograph (which is simply a device for recording the electrical activity of the brain by attaching electrodes to the scalp) shows that while there is a change in the pattern of activity during sleep,
第一點,腦電圖記錄儀(不過是一種把電極接到頭皮上記錄腦電活動的儀器)顯示,人在睡眠時大腦活動的方式有變化,