If you put the electrode in just the right place, then when the electrode gets turned on, it stimulates the pleasure center in the rat's brain and it gets a little burst of pleasure, a pretty intense burst of pleasure.

只要把电极放对地方，然后启动电极，刺激老鼠大脑的快乐中枢,老鼠感受到一股快感，一股很强烈的快感。

耶鲁公开课 - 死亡课程节选