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
To sleep. Perchance to file? Findings published online this week by the Proceedings of the National Academy of Sciences further
To sleep. Perchance to file? Findings published online this week by the Proceedings of the National Academy of Sciences further
admin
2011-05-29
112
问题
To sleep. Perchance to file? Findings published online this week by the Proceedings of the National Academy of Sciences further support the theory that the brain organizes and stows memories formed during the day while the rest of the body is catching zzz’s.
Gyorgy Buzsaki of Rutgers University and his colleagues analyzed the brain waves of sleeping rats and mice. Specifically, they examined the electrical activity emanating from the somatosensory neocortex (an area that processes sensory information) and the hippocampus, which is a center for learning and memory. The scientists found that oscillation in brain waves from the two regions appear to be intertwined. So-called sleep spindles (bursts of activity from the neocortex) were followed tens of milliseconds later by beats in the hippocampus known as ripples. The team posits that this interplay between the two brain regions is a key step in memory consolidation.
A second study, also published online this week by the Proceedings of the National Academy of Sciences, links age-associated memory decline to high glucose levels.
Previous research had shown that individuals with diabetes suffer from increased memory problems. In the new work, Antonio Convit of New York University School of Medicine and his collaborators studied 30 people whose average age was 69 to investigate whether sugar levels, which tend to increase with age, affect memory in healthy people as well. The scientists administered recall tests, brain scans and glucose tolerance tests, which measure how quickly sugar is absorbed from the blood by the body’s tissues. Subjects with the poorest memory recollection, the team discovered, also displayed the poorest glucose tolerance. In addition, their brain scans showed more hippocampus shrinkage than those of subjects better able to absorb blood sugar.
"Our study suggests that this impairment may contribute to the memory deficits that occur as people age." Convit says. "And it raises the intriguing possibility that improving glucose tolerance could reverse some age-associated problems in cognition." Exercise End weight control can help keep glucose levels in check, so there may be one more reason to go to the gym.
Which of the following statements is nearest in meaning to the sentence "To sleep. Perchance to file?"?
选项
A、Does brain arrange memories in useful order during sleep?
B、Does brain have memories when one is sleeping?
C、Does brain remember files after one falls asleep?
D、Does brain work on files in sleep?
答案
A
解析
文章第一段告诉我们,科学新发现进一步支持了一种理论,即,当人体进入睡眠状态时,大脑对在白天形成的记忆进行组织和储存。“To sleep. Perchance to file?”file memories:归档并储存记忆。:file意为“to put or keep (papers, etc.) in useful order for storage or reference”(把…归档)。To sleep.Perchance to file?:从莎士比亚笔下哈姆雷特的独白中的名句“To sleep, perchance to dream.”改编而来。
转载请注明原文地址:https://kaotiyun.com/show/ML6O777K
0
考博英语
相关试题推荐
Lookatthegraphbelow.Itshowstheaveragesharepricesofthreecompanies-GrantInternational,HDCUnionandtheLindelGr
Readthearticlebelowaboutproblemsindonginternationaltrade.Foreachquestion23-28ontheoppositepage,choosethe
Readthearticlebelowaboutproblemsindonginternationaltrade.Foreachquestion23-28ontheoppositepage,choosethe
SunwinProperty’slatestresultsarelikelytoprovidefurtherpessimismaboutapick-upinthebuildingindustry.
Ifyouhaveanyfurtherquestionaboutournewproducttoask,donothesitatetocallmeat13044153703.
ReadtheinformationbelowaboutmakinginternationalpaymentsthroughtheInternet.Choosethecorrectwordtofilleachga
随机试题
A.不溶于水,可溶于氢氧化钠B.与吡啶-硫酸铜试液反应显蓝色C.在空气中易氧化变成红色D.巴比妥类药物,且水溶液可吸收二氧化碳而变浑浊E.注射剂常以盐酸调节适宜的pH值
健康促进是指教育以及能促使行为与环境改变的
【背景资料】某城市桥梁工程项目,施工人员在大体积墩台及其基础施工时的部分施工工艺和方法为:(1)在墩台基础中埋放了厚度为120mm的石块,且埋放的数量为混凝土结构体积的20%;(2)在浇筑混凝土时选择了一天中气温较高时进行;(3)在后张有黏结预应力混凝土
高性能混凝土的特征之一是()。
工程量清单的最基本的功能是( )。
西藏的一些高僧往往以经年累月的光阴用五彩细砂砌成巧夺天工的曼荼罗图案,整个过程中,作业者口诵经文、心存敬意、屏息凝视、一丝不苟。几经辛苦,到了功行完满的一刻,却会毫不留恋地一手抹掉。这一种态度,对惯于享用先进科技和讲求功效的现代人来说,骤看简直不可思议,但
按国际惯例,可以给予申请签证者高于或低于护照种类的签证。()
Prenland的人口普查数据表明,当地30多岁未婚男性的人数是当地30多岁的未婚女性人数的10倍,这些男性都想结婚,但是很显然,除非他们多数与Prenland以外的妇女结婚,否则除去一小部分外,大多数还是会独身。以上论述依据下面哪个假设?
中华民族伟大复兴的中国梦,包含着丰富的思想内涵,其中最核心的内容是国家富强、民族振兴、人民幸福。这三者之间的关系是
下列属于计算机程序设计语言的是()。
最新回复
(
0
)