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
考研
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
2014-10-27
71
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.【F1】
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.【F2】
The particular stage of sleep in which the Belgian group is interested in is rapid eye movement sleep, when 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.【F3】
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.【F4】
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.【F5】
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.
【F1】
选项
答案
另一种理论认为,记忆实际上是在白天形成的,只不过是在晚上对它“编辑”,并把多余的删去。
解析
转载请注明原文地址:https://kaotiyun.com/show/ONK4777K
0
考研英语一
相关试题推荐
ShouldtheTreasurysellitseconomicforecastingcomputersforscrap?ForthepasttwoyearsnooneoutsidetheConservativePa
Mostofthepeoplewhoappearmostoftenandmostgloriouslyinthehistorybooksaregreatconquerorsandgeneralsandsoldiers
Lionsare【C1】______;theyprefertoeatwithouthavingtodotoomuchwork.Whenrestingintheshade,theyarealsowatchingth
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
Americanwomenexperienceagreat【C1】______oflifestyles.A"typical"Americanwomanmaybesingle.Shemayalsobedivorcedor
WorkisaveryimportantpartoflifeintheUnitedStates.WhentheearlyProtestant【C1】______cametothiscountry,theybrough
WorkisaveryimportantpartoflifeintheUnitedStates.WhentheearlyProtestant【C1】______cametothiscountry,theybrough
KarlVonLinne(orLinnaeus,asheiswidelyknown)wasaSwedishbiologistwhodevisedthesystemofLatinisedscientificnames
KarlVonLinne(orLinnaeus,asheiswidelyknown)wasaSwedishbiologistwhodevisedthesystemofLatinisedscientificnames
Noonedoubtsthepowerofthemedia,andnoonedoubtsthemediaisusefultothoseinpower.Newspapershavevast【B1】______com
随机试题
渡白沟①
下列哪个部位最容易听到正常肺泡呼吸音
急惊风之暴受惊恐证的治疗主方是
某企业出资150万元购建一厂房,预计可使用20年,净残值为10万元,若采用平均年限法计提折旧,则月折旧额为()万元。
【2012年第3题】题6~10:某办公楼供电电源10kV电网中性点为小电阻接地系统,双路10kV高压电缆进户,楼内10kV高压与低压电气装置共用接地网。请回答下列问题,并列出解答过程。低压配电系统接地及安全保护采用TN-S方式,下列常用机电设备简单接线
Y企业注册资本5000万元,法定盈余公积金1800万元,2004年度亏损200万元,该企业当年最多可向股东分配的股利为( )万元。
多动症儿童行为主要特征有()
Writeanessaybasedonthechart.Inyourwriting,youshould1)interpretthechart,and2)giveyourcomments.Yo
OneofthemoreinterestingthingsaboutHollywood’sGoldenAgeisjusthowmuchofitwasoneelaborate,tightlycontrolledlie
Asurveywasconductedonthedeathrateofnewbornbabies,____________(其结果令人震惊)
最新回复
(
0
)