求救Prep07中70题逻辑原文解释～～

Kateez

According to a review of 61 studies of patients suffering from severely debilitating depression, a large majority of the patients reported that missing a night's sleep immediately lifted their depression.  Yet sleep-deprivation is not used to treat depression even though the conventional treatments, which use drugs and electric shocks, often have serious side effects.              
Which of the following, if true, best explains the fact that sleep-deprivation is not used as a treatment for depression?                                    
(A) For a small percentage of depressed patients, missing a night's sleep induces a temporary sense of euphoria.
(B) Keeping depressed patients awake is more difficult than keeping awake people who are not depressed.
(C) Prolonged loss of sleep can lead to temporary impairment of judgment comparable to that induced by consuming several ounces of alcohol.
(D) The dramatic shifts in mood connected with sleep and wakefulness have not been traced to particular changes in brain chemistry.
(E) Depression returns in full force as soon as the patient sleeps for even a few minutes.


亲们，这段逻辑原文的意思不是很理解。前面毕竟信息说：缺少一晚的睡眠会提高忧郁。后面就说睡眠剥夺（sleep－deprivation）的方法并不用来治疗忧郁症，即使传统治疗的方法会产生严重的副作用。不是应该睡多才能降低忧郁吗？因为前面说缺少睡眠会提高忧郁，但是E选项说一旦病人睡几分钟忧郁又会产生。希望cders帮助解答解答？是我读逻辑原文出现了问题～～

Kateez

顶顶～～求cders分享分享下经验～～～