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
2011-02-16
28
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/VEXd777K
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
ThebeginningofAmericanliteratureAmericanhasalwaysbeenalandofbeginnings.AfterEuropeans"discovered"Americain
Icebergs1Icebergsareamongnature’smostspectacular(壮观的)creations,andyetmostpeoplehaveneverseenone.Avagueai
Aresultofnuclearexplosion,falloutisthedescentofminuteparticlesofradioactivematerialthroughtheatmosphere.
HowtoLearnLanguageSuccessfully1Somepeopleseemtohaveaknackforlearninglanguages.Theycanpickupnewvocabulary,m
Theatmosphere,anarrowbandofgasessurroundingtheEarth,ismaintainedbygravitationalpull.
MarriageAdvertisementsinIndiaEverySundaymorningmillionsofIndianssettledownwithacupofteaandspecialweekend
SexChangeSurgeryGuidelinesDraftedChinaissettoissueitsfirstclinicalguidelineonsex-changesurgery,accordingto
NuclearPowerandItsDangerNuclearpower’sdangertohealth,safety,andevenlifeitselfcanbesummedupinoneword;ra
Wherecantheexpression"lameduck"beheard?
WhendidDr.Hubergethisowntelescope?
随机试题
毛泽东在《论持久战》中指出,抗日战争要经过的三个阶段是()
结缔组织是基本组织中形式最多样的组织,由大量细胞和少量细胞间质构成。()
丝裂霉素的临床应用包括:
关于总产程和产程分期的叙述正确的是
某机电安装公司承接某工厂建设项目的主厂房、生产用锅炉房等机电安装工程。其中主厂房需要安装的机电设备中动设备不多,主要是容器类的静设备和工艺管线、电气动力、照明等;生产用锅炉安装的技术文件规定,锅筒与对流管连接方法采用焊接。该公司项目经理部在组织制
项目信息门户是一种非常重要的信息管理方式,其运行的周期是()。
掷两个骰子,掷出的点数之和为奇数的概率为P1,掷出的点数之和为偶数的概率为P2,问P1和P2的大小关系是()。
相对于纸张的脆弱易腐而言,竹简更易保存。然而存世的古籍之中,纸张装订的书本远多于竹简。以下哪项如果为真,最能解释上述矛盾?
同盟会成立后先后发动了一系列反清武装起义,其中影响最大的是()
Remembertheconceptof"sisterhood"?Thatquaintrelicofanideathatwomenowedittootherwomentocrashthroughceilings
最新回复
(
0
)