首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Before a big exam, a sound night’s sleep will do you more good than poring over textbooks. That, at least, is the folk wisdom. A
Before a big exam, a sound night’s sleep will do you more good than poring over textbooks. That, at least, is the folk wisdom. A
admin
2013-01-12
99
问题
Before a big exam, a sound night’s sleep will do you more good than poring over textbooks. That, at least, is the folk wisdom. And science, in the form of behavioral psychology, supports that wisdom. But such behavioral studies cannot distinguish between two competing theories of why sleep is good for the memory. One says that sleep is when permanent memories form. The other says that they are actually formed during the day, but then "edited" at night, to flush away what is superfluous.
To tell the difference, it is necessary to look into the brain of a sleeping person, and that is hard. But after a decade of painstaking work, a team led by Pierre Maquet at Liege University in Belgium has managed to do it The particular stage of sleep in which the Belgian group is interested in is rapid eye movement (REM) sleep, when brain and body are active, heart rate and blood pressure increase, the eyes move back and forth behind the eyelids as if watching a movie, and brainwave traces resemble those of wakefulness. It is during this period of deep that people are most likely to relive events of the previous day in dreams.
Dr. Maquet used an electronic device called PET to study the brains of people as they practiced a task during the day, and as they slept during the following night. The task required them to press a button as fast as possible, in response to a light coming on in one of six positions. As they learnt how to do this, their response times got faster. What they did not know was that the appearance of the lights sometimes followed a pattern — what is referred to as "artificial grammar". Yet the reductions in response time showed that they learnt faster when the pattern was present than when there was not
What is more, those with more to learn (i. e. , the "grammar" , as well as the mechanical task of pushing the button) have more active brains. The "editing" theory would not predict that, since the number of irrelevant stimuli would be the same in each case. And to eliminate any doubts that the experimental subjects were learning as opposed to unlearning, their response times when they woke up were even quicker than when they went to sleep.
The team, therefore, concluded that the nerve connections involved in memory are reinforced through reactivation during REM sleep, particularly if the brain detects an inherent structure in the material being learnt So now, on the eve of that crucial test, maths students can sleep soundly in the knowledge that what they will remember the next day are the basic rules of algebra and not the incoherent talk from the radio next door.
As manifested in the experimental study, rapid eye movement is characterized by______
选项
A、intensely active brainwave traces.
B、subjects’quicker response times.
C、complicated memory patterns.
D、revival of events in the previous day.
答案
A
解析
题干问:“如实验室研究中所表明,快眼运动的特征是……”。正确选项为A“急剧活跃的脑电图”,此题可以定位在第2自然段,且在第3、4段又再次说明。选项D“被研究者很快的反应速度”,选项C“复杂的记忆模式”和选项D“前一天事件的重现”都不是快眼运动的主要特征。
转载请注明原文地址:https://www.kaotiyun.com/show/659O777K
0
考博英语
相关试题推荐
Signsofdeafnesshadgivenhimgreatanxietyasearlyas1798.Foralongtimehesuccessfullyconcealeditfromallbuthismo
Weaskfor______fromothers,yetwearenevermercifulourselves.
People’sbehaviorpatternsmustbe______withtheirgoals.
Aperson’scalorierequirementsvary______hislife.
(66)GNPbecomesanobsoletemeasureofprogressinasocietystrivingtomeetpeople’sneedsasefficientaspossibleandwitht
Groomingandpersonalhygienehavebeenaroundforages.It’shardtoimagineatimewhenpeopleweren’tconcernedwithtakingc
Itisunfortunatethat,owingtolackofmoney,theseexperimentsmustnow______beforetheobjectivehasbeenachieved.
Aterribletrafficaccidenthappened;peopleweresaddenedastheywatchedthe______sightonTV.
Thedegreeofeconomicgrowthisan______ofthelevelofliving.
Agoodmodernnewspaperisanextraordinarypieceofreading.Itisremarkablefirstforwhatitcontains:therangeofnewsfro
随机试题
甲公司属于工业企业,为增值税一般纳税人,由A、B、C三位股东于2002年12月31日共同出资,出资比例分别为40%、35%和25%。有关资料如下:(1)2002年12月31日三位股东的出资方式及出资额如下表所示(各位股东的出资已全部到位,并经中国注册会计
可制备成舌下含化片的方式给药的药物是
受理执业医师注册申请的卫生行政部门,对应当准予注册的,准予注册期限是自收到申请之日起
某癌症患者,穿刺取肝组织,镜下发现癌细胞与正常肝细胞相似,有异型性,有腺管样结构。应诊为
女,29岁,因急性腹痛8小时入院。入院诊断急腹症(原因待诊)。对该病人的护理措施不正确的是
空调风管和管道的绝热材料,无特殊规定时,可采用()。
(2008年)作用水头相同时,孔口的过流量要比相同直径的管嘴过流量()。
质量风险导致的损失包括()
下列关于证券公司合规负责人的说法中,正确的有()。Ⅰ.合规负责人应对证券公司经营管理行为的合法合规性进行审查、监督或者检查Ⅱ.独立董事可担任合规负责人Ⅲ.合规负责人由股东大会决定聘任Ⅳ.证券公司解聘合规负责人,应当有正当理由,自
宋老师发现了教学中的某一问题并对其描述,继而形成解决计划并实施,随后搜集数据和材料以分析计划的有效性,最后把结果应用于处理后续课堂中出现的类似问题。这种研究的方法是()。
最新回复
(
0
)