日韩色综合-日韩色中色-日韩色在线-日韩色哟哟-国产ts在线视频-国产suv精品一区二区69

出國(guó)

?

每日英語(yǔ)

您現(xiàn)在的位置: 首頁(yè) > 托福 > 托福閱讀 > 正文

托福閱讀材料:人體腦白金

來源:新東方在線 編輯:mike ?  可可英語(yǔ)APP下載 |  可可官方微信:ikekenet
字號(hào): | |
評(píng)論 打印

Melatonin, sometimes called “the hormone of darkness,” plays an important role in regulating our daily sleep patterns. This hormone is produced by our bodies and in most organisms melatonin production is higher during the night than during the day.


  褪黑素,又名黑素細(xì)胞凝集素的荷爾蒙,在調(diào)節(jié)我們?nèi)粘K咭?guī)律中扮演重要角色。人體自身分泌褪黑激素,而且大多數(shù)生物夜晚比白天分泌得更多。


  In addition to their body’s own melatonin, many people take melatonin supplements in an attempt to help them sleep, fight jet lag or balance out seasonal affective disorder.


  此外,一些人通過體外補(bǔ)充褪黑素改善睡眠,緩解飛機(jī)時(shí)差感、平衡季節(jié)性情緒失調(diào)。


  Melatonin And Memories


  褪黑素對(duì)記憶的影響


  But a study by a group of scientists at the University of Houston suggests that melatonin might have a negative impact on the ability to form new memories.


  但是,休斯頓大學(xué)的科學(xué)家們研究表明:褪黑素阻礙記憶形成。


  The researchers were interested in how the body’s internal clock affects the formation of new memories. They found that small striped minnows called zebra fish learned very well during the day but very poorly at night, when melatonin levels are higher.


  研究人員想弄清楚體內(nèi)生物鐘如何影響新生記憶的形成。研究人員發(fā)現(xiàn)斑馬魚白天學(xué)習(xí)能力很好;夜晚卻很差,而夜晚褪黑素分泌旺盛。


  They wondered if melatonin played a role in learning and memory.


  研究人員懷疑褪黑素影響學(xué)習(xí)和記憶。


  Melatonin And Learning


  褪黑素對(duì)學(xué)習(xí)的影響


  They treated zebra fish with extra melatonin during the day, boosting the hormone levels to night-time amounts.


  白天,研究人員喂給斑馬魚褪黑素,促進(jìn)斑馬魚夜晚褪黑素分泌。


  They discovered that high melatonin did not affect learning per se, but dramatically reduced the fishes’ ability to form new memories, or to remember what they’d learned.


  研究人員發(fā)現(xiàn)大量的褪黑素沒有直接影響學(xué)習(xí)本身,但是卻很大程度地使斑馬魚的記憶衰退,斑馬魚不記得學(xué)過的東西。


  Then the scientists inhibited melatonin activity in the fish. They did this by blocking melatonin receptors with inhibitory drugs. The fishs’ melatonin levels were unchanged, but the ability of melatonin to affect the brain was blocked.


  接著,科學(xué)家們抑制斑馬魚體內(nèi)的褪黑素的作用:抑制藥物阻礙褪黑素受體。斑馬魚褪黑素分泌量沒改變,但是褪黑素不能影響不了大腦。


  Blocking Melatonin


  阻礙褪黑素


  With melatonin activity blocked, the ability of the fish to form new memories was drastically improved, even at night.


  褪黑素的作用受阻,斑馬魚新生記憶能力明顯改善,夜晚也很好。


  This research has potential benefits for humans. For example, the use of melatonin receptor blockers could improve performance of night-time cognitive tasks, helping people such as night-shift workers or students cramming for exams.


  該項(xiàng)研究帶給人類潛在好處。例如,褪黑素受體的阻礙能影響人夜晚的認(rèn)知能力,那么對(duì)于那些夜班工作者和熬夜備考的學(xué)生都有所幫助。


?

文章關(guān)鍵字: 托福 閱讀 方法 總結(jié)

最新文章

頻道文章點(diǎn)擊排行

可可英語(yǔ)官方微信(微信號(hào):ikekenet)

每天向大家推送短小精悍的英語(yǔ)學(xué)習(xí)資料.

添加方式1.掃描上方可可官方微信二維碼。
添加方式2.搜索微信號(hào)ikekenet添加即可。
主站蜘蛛池模板: 老外毛片| 沈晓海个人资料| 江南style之我的白日梦| 红色诗集诗配画竖版| 布莱德·德尔森| 八月照相馆| 2024年中央遴选笔试真题| 猎罪图鉴在哪看| angela white电影| 叶子楣作品| 《雪中悍刀行》主演| 条件概率经典例题| 视频精品| 粤韵风华| 铁血使命演员表全部| 思想认识不到位,重视程度不够| 男同性网站| 补铁最好水果第一名| 小偷家族深度解析| 电影双面情人| 真濑树里| 职业兽医医生资格证报名官网| 重回蓝色珊瑚礁| 杨玉环一级片| 邵雨琪| 龙的故乡 电影| 菲律宾电影毕业生代表| 最美情侣高清免费观看视频大全| 布布一二情侣头像| 石锐| 复仇者联盟4免费完整版电影| 军官与男孩| 心经般若波罗蜜多心经全文 | 美女网站视频免费| 女用春情药什么好| cctv5+体育频道| 栀子花开电影| 混的头像| 母亲韩国| 中国未来会黑人化吗| 大内密探零零发演员表|