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 better than poring over textbooks. That, at least, is the folk wisdom. And
Before a big exam, a sound night’ s sleep will do you better than poring over textbooks. That, at least, is the folk wisdom. And
admin
2019-10-21
56
问题
Before a big exam, a sound night’ s sleep will do you better 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 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 sleep 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.
By referring to the artificial grammar, the author intends to show______.
选项
A、its significance in the study
B、an inherent pattern being learnt
C、its resemblance to the lights
D、the importance of a night’ s sleep
答案
B
解析
原文的第三段最后“What they did not know…followed a pattern—what is referred to as“artificial grammar”.Yet the reductions in response time showed that…”说明了这种内在模式,也就是“artificial grammar”,对于记忆的重要性。故应选B。
转载请注明原文地址:https://jikaoti.com/ti/SwIsFFFM
本试题收录于:
公共英语五级笔试题库公共英语(PETS)分类
0
公共英语五级笔试
公共英语(PETS)
相关试题推荐
Somepeoplebelievethatinternationalsportcreatesgoodwill(31)thenationsandthatifcountriesplay(32)togethertheywil
WhichofthefollowingstatementsaboutthetelephoneofthefutureisNOTtrue?
Accordingtothepassage,whatdistinguishesmanypresent-daytheatersfromthosebuiltpriortothenineteenthcentury?Whywa
HowhavetheoncereasonablypricedholidaysinEuropebecometoAmericans?
______thereisapalacesituatedonthetipofoldConstantinople?______,______IstanbulisconnectedtoEuropeandtheresto
Peoplehavebeenpassionateaboutrosessincethebeginningoftime.Infact,itissaidthatthefloorsofCleopatral’spalace
NoteveryPresidentisaleader,buteverytimeweelectaPresidentwehopeforone,especiallyintimesofdoubtandcrisis.I
Thetechnologyoffersthehopeofabetterworld,butpresentshazardsifmishandled.
Forhigh-riskpropositionsyieldinghighreturns,thereisnothingtobeatthehandfulcompaniesmarketingeternallife.(31)th
wastehistalents
随机试题
参加资格考试时,考生常常被迫参加强制性的考前培训,购买指定教材,花了不少的“冤枉钱”。为了参加一项考试,除了交足报名费、考试费等各项费用之外,还往往要交钱买指定教材,参加指定培训,前些年就已经拿到导游证的小陈对此还是耿耿于怀,对那笔冤枉钱总觉得收得没道理。
物理变化与化学变化的本质区别是()。
十二经脉气血充盛有余则渗注于
确定上述变更属于哪类变更。列出工程变更从提出到确认的几个步骤。除背景中提到的三条构造裂缝防治措施外,再列举两条防治措施。
下列叙述中正确的是()。
20世纪80年代以来,国际金融市场最重要的创新便是金融衍生品市场的发展。最早出现的是简单的衍生品,如远期、期货、期权、互换等,随后出现了多种复杂产品。20世纪90年代信用衍生品的出现,将金融衍生品市场的发展推向新的阶段。在2007年爆发的美国次贷危机中,信
公安机关应经常向广大群众宣传同违法犯罪作斗争的重大意义,激励他们积极参加打击刑事犯罪的工作,讲清同刑事犯罪作斗争是法律赋予每个公民的权利和义务,是每个热爱社会主义祖国的公民义不容辞的政治责任和社会责任,鼓励群众见义勇为。()
The(i)______ofturtlesandtortoisesis(ii)______;onegianttortoiseinaCalcuttazooisbelievedtohavereachedtheageof
Whowillprobablyreadthispage?Thosewhowantto______inAustraliaandNewZealand.Howmanyweb-pagesdidthesearcheng
Whileitseemsprettyobviousthatgratitudeisapositiveemotion,psychologistsfordecadesrarelydelved(探究)intothescience
最新回复
(
0
)