雅思閱讀之阿爾茨海默的希望之光

雅思閱讀之阿爾茨海默的希望之光，關(guān)于這個(gè)問題的答案，你想知道嗎？下面中國(guó)教育在線小編就來為各位小伙伴解答分享一下，想要了解的話，那就話不多說，趕緊往下看。

本文含大量自然科學(xué)類閱讀高頻詞，另外標(biāo)注了一些初級(jí)生理學(xué)詞匯最好看到要認(rèn)識(shí)，這些詞匯屬于以前雅思不要求但在近兩年改革趨勢(shì)中加重的單詞，同時(shí)也是托福高頻單詞。

Using a standard lab test of memory, a mouse was placed in a box and given a small electrical shock to its feet. Normal mice remember this and freeze in fear if put back in the box the following day, but mice with Alzheimers scamper about unfazed. Yet when the researchers stimulated the dentate gyrus of these mice with blue light, they also froze, suggesting that they were now able to recall the original shock.

用一個(gè)標(biāo)準(zhǔn)的實(shí)驗(yàn)室記憶測(cè)試，一只老鼠被放在盒子里面并對(duì)它的腳給予微小電擊。如果接下來幾天把它放進(jìn)盒子里，正常老鼠會(huì)記住并且由于害怕而呆住不動(dòng)，阿爾茨海默癥老鼠則不受影響活蹦亂跳。但當(dāng)研究人員用藍(lán)光刺激這些老鼠的齒狀回時(shí)，它們一樣會(huì)呆住不動(dòng)，這表明它們能回憶起最初的電擊感受。

【經(jīng)典句式】

standard 標(biāo)準(zhǔn)的

electrical shock電擊

Alzheimers阿爾茨海默癥

stimulate刺激

recall回憶

original最初的

Holdingon to a fearful memory in the long term,however, requires the brain to strengthen the nerve connections (synapses) that link memory of the box to experience of the shock. This process, known as long-term potentiation, goes awry in the brains of Alzheimers patients. Consistent with this idea,the Alzheimers mice did not freeze when placed in the box but only when their neurons were illuminated.

可是要長(zhǎng)期保持住害怕記憶，要求大腦加強(qiáng)神經(jīng)聯(lián)系(突觸)來連結(jié)盒子里的電擊實(shí)驗(yàn)的記憶。這個(gè)過程，叫做長(zhǎng)時(shí)程增強(qiáng)，沒能在阿爾茨海默癥老鼠大腦里順利進(jìn)行。和這一致的是，把阿爾茨海默癥老鼠放在盒子里，僅僅照射神經(jīng)元，老鼠并沒有呆住不動(dòng)。

【經(jīng)典句式】

hold on to sth保持住

fearful害怕的

in the long term 長(zhǎng)期地

require要求

strengthen加強(qiáng)

nerve connection 神經(jīng)聯(lián)系

process過程

consistent with跟一致

To help the Alzheimers mice consolidate and keep their memory of the electric shock,the team flashed their dentate gyrus with blue light at 100 hertz, a frequency known to induce long-term potentiation. After this the Alzheimers mice froze in the box for at least six consecutive days, suggesting they were able to remember the shock themselves.

為了幫助阿爾茨海默癥老鼠鞏固和保持它們對(duì)電擊的記憶，團(tuán)隊(duì)用100赫茲的藍(lán)光照射它們的齒狀回，這個(gè)頻率能誘導(dǎo)長(zhǎng)時(shí)程增強(qiáng)。這之后老鼠連續(xù)六天呆在盒子里不動(dòng)，表明它們能記住電擊感受。

【經(jīng)典句式】

consolidate凝固

electric shock 電擊

flash閃光;閃電

frequency頻率

induce誘導(dǎo)

consecutive連續(xù)的

Work by other groups has suggested that inits early stages, Alzheimers principally damages the brains ability to process and store memories.This new work, however, indicates that it is the brains ability to retrieve memories that is impaired. The distinction is far from an academic one. If memories are garbled before they are stored,they are lost for ever. But if Dr Tonegawa is right, then memories are correctly preserved in the brains of Alzheimers patients.That means it may be possible to rescue themperhaps by adapting optogenetics for use in human sufferers. That remains a distant possibility for now.

其他團(tuán)隊(duì)的研究表明在早期階段，阿爾茨海默癥主要破壞大腦處理和存儲(chǔ)記憶的能力。而這項(xiàng)新研究則說明，受損的恰恰是大腦讀取記憶的能力。區(qū)別遠(yuǎn)大于理論。如果記憶在存儲(chǔ)前就被篡改，那這段記憶就永遠(yuǎn)丟失了。但如果利根博士是對(duì)的，那段記憶被正確保存在阿爾茨海默癥患者的大腦里。這意味著我們也許可能通過對(duì)人類患者適應(yīng)光遺傳學(xué)來恢復(fù)這些記憶。但這一可能性現(xiàn)在看來還是前路漫漫的。

【經(jīng)典句式】

stage階段

principally主要地

damage破壞

process處理

store存儲(chǔ)

retrieve取回

impair損害

distinction區(qū)別

preserve保存

patient病人

rescue拯救

adapt適應(yīng)

sufferer病人;患者

【大作文萬用句式】

is far from 遠(yuǎn)大于;遠(yuǎn)遠(yuǎn)不止

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