Soon after entering the confinement cell most subjects went to sleep and slept almost without interruption for ten to twenty-four hours. These are gross estimates for there was nothing by which the subjects could determine the time which had elapsed. We know for certain that one subject slept for nineteen hours but insisted that he had had a nap of less than one hour. According to the monitoring microphone, which was capable of picking up the deep breathing of sleep, it seems more likely that most subjects slept all of the first twenty-four hours.
We felt that so much sleeping in the first day wasted the effects of confinement, so we started placing subjects in SD early in the morning. We reasoned that after a night' s sleep our confined subject would be unable to dissipate(驱散) the effects of SD by sleeping. Such was not the case. As far as we could determine they went to sleep just as quickly and slept just as long as the previous subjects. We then started entering the subjects at midmorning, midday, and midafternoon. As it turned out, it made no difference when during the day and, presumably, during the night we started the confinement; the initial sleep period was always about the same.
We had not expected this extended period of initial sleep. In fact, it had seemed reasonable to expect something of the opposite. SD was a very novel situation for our subjects, and as such, we reasoned, it should have occupied them for some time. I had a similar expectation for astronauts during space flight and was greatly surprised to learn that the Russian astronaut Yuri Gagarin had been able to sleep during his space flight around the earth.
Other effects were also noted. With no real sensations to work on, the brain makes up all sorts of false information. Many people experience vivid dreams and hallucinations (幻觉). When they are finally taken out of the room into the real changing world of light and sound, they are in a very strange state of mind, ready to believe anything and not really able to make decisions.
This passage is mainly about what will happen if sensations were lost.
A.Right
B.Wrong
C.Not mentioned
第1题
关于CT检查前患者的准备工作,下述不正确的是
A.CT检查前患者需要携带有关检查资料
B.检查并去除被检部位的金属物品
C.对进行胸腹部检查的患者做必要的呼吸训练
D.对于进行腹部检查的患者必须事先口服对比剂
E.进行盆腔扫描的患者,需要提前一天做好口服对比剂的准备
第2题
下列CT检查,患者扫描前的准备工作最简单的是:
A.肾脏CT扫描
B.肝脏CT扫描
C.涎腺CT扫描
D.子宫CT扫描
E.前列腺CT扫描
第3题
CT检查前,患者准备工作的主要依据是
A、申请单
B、预约登记卡
C、"患者需知"预约单
D、对家属的交代
E、患者自己理解
第4题
CT检查前患者的准备工作不包括
A、患者须携带有关检查资料
B、被检查患者的家属不能进入CT室
C、对患者应作好耐心的解释说明工作
D、对于不能合作的患者事先给予镇静剂
E、需要做增强的患者做或不做过敏试验
第6题
CT检查前患者的准备工作,下列错误的是
A、检查并去除被检部位的金属物品
B、胸腹部检查训练患者屏气
C、心脏检查患者要进行闭气训练
D、儿童或不能合作的患者需采用镇静或麻醉
E、增强患者不必做碘过敏试验
第7题
下列不是CT检查前患者的准备工作的是
A、做盆腔扫描检查的患者,还需提前一天作好口服对比剂的准备
B、作腹部检查的患者,事先作好口服对比剂或水等的准备
C、作增强的患者,应详细询问有无药物过敏史
D、检查前2周内,做过食管、胃肠钡餐和钡剂灌肠的患者不能作腹部CT扫描
E、对于胸腹部检查的患者,作必要的呼吸训练
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