首页
登录
职称英语
To sleep. Perchance (古英文,或许) to file? Findings published online this week by
To sleep. Perchance (古英文,或许) to file? Findings published online this week by
游客
2023-07-19
22
管理
问题
To sleep. Perchance (古英文,或许) to file? Findings published online this week by the Proceedings (文献汇编) of the National Academy of Sciences further support the theory that the brain organizes and stores memories formed during the day while the rest of the body is catching zzz’s.
Gyorgy Buzsake of Rutgers University and his colleagues analyzed the brain waves of sleeping rats and mice. Specifically, they examined the electrical activity emanating (发源) from the somatosensory neocortex (大脑体觉新皮层) (an area that processes sensory information) and the hippocampus (海马状突起), which is a center for learning and memory. The scientists found that oscillations (震荡) in brain waves from the two regions appear to be intertwined. So-called sleep spindles (纺锤体) (bursts of activity from the neocortex) were followed tens of milliseconds (毫秒) later by beats in the hippocampus known as ripples (波动). 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 (葡萄糖) levels.
Previous research had shown that individuals with diabetes (糖尿病) 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 (血糖浓度容许量) 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 (损害) 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 and weight control can help keep glucose levels in check, so there may be one more reason to go to the gym. [br] What is the relation of memory to glucose tolerance, as is indicated by a research mentioned in Paragraph 4?
选项
A、People with poor memory have high glucose tolerance.
B、People with good memory have low glucose tolerance.
C、Memory level has nothing to do with glucose tolerance.
D、The poorer the memory, the poorer glucose tolerance.
答案
D
解析
可定位在第4段倒数第2句:Subjects with the poorest memory recollection,the teamdiscovered,also displayed the poorest glucose tolerance(这组科学家发现,记忆力最差的人同样表现出最低的血糖浓度容许度),而题干问“记忆力与血糖容许度之间的关系”,故D为正确选项。
转载请注明原文地址:https://tihaiku.com/zcyy/2849679.html
相关试题推荐
Inanexperimentpublishedlastmonth,researchersfromtheUniversityofIl
Whatheintendstostressis______(这些发现的结果而不是发现的过程).thefindingsratherthanthe
Researchfindingsshowwespendabouttwohoursdreamingeverynight,______(不管白天
[originaltext]Oldagemaynotsoundexciting.Butrecentfindingsoffergoo
Sharingonline,associalmediaenthusiastsarelearning,canhaveallsorts
Sharingonline,associalmediaenthusiastsarelearning,canhaveallsorts
Sharingonline,associalmediaenthusiastsarelearning,canhaveallsorts
Sharingonline,associalmediaenthusiastsarelearning,canhaveallsorts
Sharingonline,associalmediaenthusiastsarelearning,canhaveallsorts
Tosleep.Perchance(古英文,或许)tofile?Findingspublishedonlinethisweekby
随机试题
5TipstoKnowBeforeYourFirstLabClass1.【T1】theexperimentinadvan
应聘信说明:假设你是李雷,得知AMD公司招聘行政助理,给人力资源部经理SteveBush写一封应聘信。内容:1.7月份即将从清华大学毕
Whatistheeasiestwaytoshowthecomplexhierarchyofanewspaper?[br][ori
关于正常分娩第一产程的临床经过,下列哪项正确A.初产妇应是子宫颈管消失后,子宫颈
A.肺气肿 B.大量胸腔积液 C.气胸 D.支气管肺炎 E.肺不张胸部叩
该公文在内容和格式上存在一些问题,下列修改恰当的是:() A.“国发(20
某企业2012年生产总值为140万元,产品销售收入为119万元,产品销售成本为8
早期的人类失去了保护性的皮毛后,就会对黑皮肤有着强大的选择性。因为肤色较暗的个体
根据信用风险的性质,可将信用风险分为几类,下列选项中属于按信用风险性质分类的风险
就业弹性是一个国家或一个地区一定时期内的劳动就业增长率与()的比值。A.通
最新回复
(
0
)