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
Ah, blissful sleep, when we leave our daily toils behind and slip into mindless repose. Or do we? (46)Two reports in Science, on
Ah, blissful sleep, when we leave our daily toils behind and slip into mindless repose. Or do we? (46)Two reports in Science, on
admin
2009-04-27
89
问题
Ah, blissful sleep, when we leave our daily toils behind and slip into mindless repose. Or do we? (46)
Two reports in Science, one involving rats and the other humans, suggest that during sleep our brains remain quite busy, furiously consolidating important memories that have accumulated during the day.
In the rat experiments, Matthew A. Wilson of the Massachusetts Institute of Technology and Bruce L. McNaughton of the University of Arizona inserted electrodes into the hippocampus, a region of the brain thought to be involved in spatial memory. As the rats learned to navigate a maze, their neurons fired in certain patterns corresponding to specific parts of the maze.
(47)
For several nights after the rats’ maze exercises, their hippocampal neurons displayed similar firing patterns; the rats were apparently playing back their memories of running the maze.
The major difference was that the firing was more rapid, as if the memories were being run fast-forward. (48)
The firing occurred during slow-wave sleep, a phase of deep (but not dreamless) sleep marked by low-frequency pulses of electrical activity in certain regions of the brain.
The studies of humans were undertaken at the Weizmann Institute of Science in Israel. A team led by Avi Karni and Dov Sagi trained volunteers to recognize rapidly the orientation of symbols hidden in images flashed at the periphery of their vision. The workers had previously noted improvements in performance over a 10-hour period following a training session.
To determine whether sleep played a role in this phenomenon, Karni and Sagi disrupted the sleep of volunteers after they had had their training session. Interfering with the subjects’ slow-wave sleep had no significant effect. (49)
But an equivalent disruption of REM sleepy which is marked by rapid eye movements (hence its name) and vivid dreaming, kept the subjects from improving overnight.
"These results indicate that a process of human memory consolidation, active during sleep, is strongly dependent on REM sleep," the group states. The experiments lend support to a theory advanced by Jonathan "practice sessions" in which animals hone survival skills.
Why did Karni and Sagi detect memory consolidation during REM sleep and Wilson and McNaughton only during slow-wave sleep? (50)
The answer seems to be that each group studied a different type of memory, one involving a highly repetitious task and the other the recollection of a place.
Of course, hucksters have long asserted that people can learn new languages and other skills by listening to tapes while asleep. Wilson says he has been inundated with queries from people wanting to know if these claims are true. He responds that his research applies only to memories originally laid down during waking hours.
选项
答案
似乎是因为两研究小组研究的记忆类型不同,一种与高度重复性作业有关,一种则牵涉到某一地点的回忆。
解析
译文采用了转换法,将that引导的表语从句由动宾结构译作系表结构;为了避免重复"involving"先后被译成了"与…有关"和"牵涉到"。
转载请注明原文地址:https://kaotiyun.com/show/k8a4777K
0
考研英语一
相关试题推荐
Artificialintelligenceisbecominggoodatmany"human"jobs—【C1】______disease,translatinglanguages,providingcustomerservi
Thenewpaperwasspurredbythediscoveryofseveral120,000-year-oldtoolsatadesertarchaeologicalsiteintheUnitedArab
[A]Lifeisamirrorofwhatyoudo[B]Thinkaboutyourfuturefamily[C]Don’tcountonanyonebutyourself[D]Think
Onthesurface,Marsisthepictureofdesolation.Abarrenlandremains【C1】______forhundredsofmillionsofyears,motionless【
Onthesurface,Marsisthepictureofdesolation.Abarrenlandremains【C1】______forhundredsofmillionsofyears,motionless【
Airbnb,thepopularplatformthatletspeoplerentouttheirhomesandapartments,releasedtheresultsofavolunteersurveyth
Itwasonceconsideredextreme,butcosmeticsurgeryhasbecomenormalised.Butisamoreperfectselfalwaysahappierone?
Manisbornfreebutiseverywhereindebt.Intherichworld,gettingholdofyourfirstcreditcardisariteofpassagefarm
Asimpleideasupportsscience:"trust,butverify".Resultsshouldalwaysbe【C1】________tochallengefromexperiment.Thatsimp
Asimpleideasupportsscience:"trust,butverify".Resultsshouldalwaysbe【C1】________tochallengefromexperiment.Thatsimp
随机试题
《医疗机构药事管理暂行规定》要求,医师机构应逐步建立
可引起禽类肿瘤性疾病的双股DNA病毒是()
(2005)自然水系、水体的标高注法,不应标注哪项?
现有八家百货公司,每个公司人均月销售额和利润率资料如表5—3所示。请根据上述资料进行计算和判断,从下列各题的备选答案中选出正确答案。利用上述回归方程进行预测,如果每人每月销售额X为5000元,则利润率Y应该为()。
劳动行政部门处理因签订集体合同发生的争议,应自决定受理之日起()日内结束。
需要利用计算机软件分析所收集的信息的工作分析方法是( )。
斯丹达尔的文艺论著《拉辛与莎土比亚》被认为是_______。
将周长为2p的矩形绕它的一边旋转得一圆柱体,问矩形的边长各为多少时,所得圆柱体的体积为最大?
在数据流图(DFD)中,带有名字的箭头表示______。
WhichAttributesofaFoodProductareMostImportanttoConsumersA)TheAustralianstateofVictoriaisinvestinginapro
最新回复
(
0
)