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
2018-03-16
31
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.
Researchers in behavioral psychology are divided with regard to______.
选项
A、how dreams are modified in their courses
B、the difference between sleep and wakefulness
C、why sleep is of great benefit to memory
D、the functions of a good night’ s sleep
答案
C
解析
文中第一段提到“But such behavioral studies cannot distinguish between two competing theories of why sleep is good for the memory.”所以他们对为什么睡眠对记忆有好处持有不同的观点,故应选C。
转载请注明原文地址:https://kaotiyun.com/show/7xWd777K
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
Pollutionisa"dirty"word.Topollutemeanstocontaminate—topsoilsomethingbyintroducingimpuritieswhichmake(31)unfito
______,______arelookingforsomeonewhobasacross-disciplinarybackground?______suggest(s)thattheapplicantbekeenon
WhatkindofoverviewdoesthebookintendtogiveaboutAmericansociety?
Mostpeopleareright-handedandchildrenusuallyhavethesamehandednessastheirparents.Thissuggeststhatgenesareatwor
MasstransportationrevisedthesocialandeconomicfabricoftheAmericancityinthreefundamentalways.Itcatalyzedphysical
OnehundredandthirteenmillionAmericanshaveatleastonebank-issuedcreditcard.Theygivetheirownersautomatic(31)ins
TherecentsocialandeconomicchangesintheU.S.havegreatimpactonalltheAmericanhousingsystem.
Whatdoesthespeakermainlydiscuss?
Whatwasthecauseofthetragedy?
Whatiscommontragedyeverywhereaccordingtothepassage?
随机试题
下列选项中,不属于持续整理形态的是()。
A.关节发凉、麻木和酸痛B.关节发热、麻木和酸痛C.关节弹响D.关节肿大E.关节僵硬、畸形类风湿关节炎晚期出现
高分子可吸收接骨板完全吸收的时间为
我国采用的围生期是
(2007年)某理想气体在进行卡诺循环时,低温热源的温度为T,高温热源的温度为nT。则该理想气体在一个循环中从高温热源吸收的热量向低温热源放出的热量之比为()。
将“销售人员”工资表生成记账凭证。选择公式:销售人员.实发合计设置科目:贷方科目:2211—011工资;借方科目:6601—01工资
我国古代宫殿外的陈设品中,表示皇帝公正和至高无上的是()。
2012年上半年世界62个主要产钢国和地区粗钢产量76686万吨,同比增长0.88%,按日均计算仅增长0.32%,扣除我国粗钢产量外日均产量同比下降0.5%。下列选项中,2011年6月粗钢产量高于2011年上半年平均水平的是:
阅读下列材料材料1:大战宣告结束,内战不容再有,如何以建国之功收抗战之果,甚有赖于先生之惠然一行,共定大——1945年8月20日蒋介石再次邀请毛泽东到重庆谈判
A、Sydney.B、Sudan.C、America.D、Britain.D
最新回复
(
0
)