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SSS 2011-04-18

时间:2011-05-12 03:51来源:互联网 提供网友:wp661375   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science. I'm Cynthia Grabera. This will just take a minute.

Keeping the brain active and engaged appears to combat the cognitive1 decline associated with getting older. Now a study has found a new, but related, factor in maintaining a sharp mind—the space in which we live.

Researchers recruited almost 1300 senior citizens, none of whom showed any signs of clinical dementia at the start of the study. The participants had their cognitive function tested annually2 for up to eight years. And they also described their living space. For example, maybe they mostly hung around their bedroom. Perhaps they spent time in the yard. Or frequently traveled.

By the end of the study, 180 people had Alzheimers. And those whose life-space narrowed in on their immediate3 home were almost twice as likely to develop the condition as those who ventured out. The homebound folks also had an increased risk of other cognitive impairments and a faster rate of cognitive decline. The research was published in the American Journal of Geriatric Psychiatry4.

The study's lead investigator5, Bryan James of the Rush University Medical Center in Chicago, suggests that, "Perhaps life space is an indicator6 of how much we are actively7 engaging and challenging our cognitive abilities."

"Don't fence me in. Let me ride through the wide open country that I love. Don't fence me in."

Thanks for the minute. For Scientific American's 60-Second Science, I'm Cynthia Graber.


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1 cognitive Uqwz0     
adj.认知的,认识的,有感知的
参考例句:
  • As children grow older,their cognitive processes become sharper.孩子们越长越大,他们的认知过程变得更为敏锐。
  • The cognitive psychologist is like the tinker who wants to know how a clock works.认知心理学者倒很像一个需要通晓钟表如何运转的钟表修理匠。
2 annually VzYzNO     
adv.一年一次,每年
参考例句:
  • Many migratory birds visit this lake annually.许多候鸟每年到这个湖上作短期逗留。
  • They celebrate their wedding anniversary annually.他们每年庆祝一番结婚纪念日。
3 immediate aapxh     
adj.立即的;直接的,最接近的;紧靠的
参考例句:
  • His immediate neighbours felt it their duty to call.他的近邻认为他们有责任去拜访。
  • We declared ourselves for the immediate convocation of the meeting.我们主张立即召开这个会议。
4 psychiatry g0Jze     
n.精神病学,精神病疗法
参考例句:
  • The study appeared in the Amercian science Journal of Psychiatry.这个研究发表在美国精神病学的杂志上。
  • A physician is someone who specializes in psychiatry.精神病专家是专门从事精神病治疗的人。
5 investigator zRQzo     
n.研究者,调查者,审查者
参考例句:
  • He was a special investigator for the FBI.他是联邦调查局的特别调查员。
  • The investigator was able to deduce the crime and find the criminal.调查者能够推出犯罪过程并锁定罪犯。
6 indicator i8NxM     
n.指标;指示物,指示者;指示器
参考例句:
  • Gold prices are often seen as an indicator of inflation.黃金价格常常被看作是通货膨胀的指标。
  • His left-hand indicator is flashing.他左手边的转向灯正在闪亮。
7 actively lzezni     
adv.积极地,勤奋地
参考例句:
  • During this period all the students were actively participating.在这节课中所有的学生都积极参加。
  • We are actively intervening to settle a quarrel.我们正在积极调解争执。
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