The brain is as active during REM (rapid eye movement) sleep -- when most vivid dreams occur -- as it is when fully awake.

　　① Evidence from brain imaging supports this view.

　　② The brain is as active during REM (rapid eye movement) sleep -- when most vivid dreams occur -- as it is when fully awake, says Dr, Eric Nofzinger at the University of Pittsburgh.

　　③ But not all parts of the brain are equally involved; the limbic system (the “emotional brain”) is especially active, while the prefrontal cortex (the center of intellect and reasoning) is relatively quiet.

　　④ “We wake up from dreams happy or depressed, and those feelings can stay with us all day.” says Stanford sleep researcher Dr. William Dement.

　　参考译文：

　　①(现象：总)大脑造影的证据支持了以上观点。

　　②(具体：分1)匹兹堡大学的埃里克博士说，在出现清晰梦境的快速动眼睡眠中大脑和清醒时一样活跃。

　　③(转折：分2)但并非大脑的所有部分都一样，脑边缘系统(“情绪大脑”)异常活跃，而前额皮层(思维和推理的中心地带)则相对平静。

　　④(并列：分3)斯坦福睡眠研究员威廉·迪蒙特博士说：“我们从梦中醒来，或者高兴或者沮丧，这些情绪会伴随我们一整天。”

　　翻译小作业：

　　一名主要的权 威人士说，挫折不仅能被克服，事实上，还可以有意识地加以利用，以帮助我们更好地生存和发展。

　　答案：

　　One leading authority says that these setbacks can be not only overcome but actually consciously utilized, to help us survive and thrive better.