久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

English 中文網(wǎng) 漫畫網(wǎng) 愛新聞iNews 翻譯論壇
中國網(wǎng)站品牌欄目(頻道)
當(dāng)前位置: Language Tips > 新聞選讀

“阿凡達(dá)”式幻想成真 美科學(xué)家利用猴子實現(xiàn)異體控制
Scientists allow monkey to control ANOTHER monkey's body: 'Avatar'

[ 2014-02-21 09:42] 來源:中國日報網(wǎng)     字號 [] [] []  
免費訂閱30天China Daily雙語新聞手機報:移動用戶編輯短信CD至106580009009

在美國科幻電影《阿凡達(dá)》中,雙腿癱瘓的男主角可以通過意識控制克隆外星人“阿凡達(dá)”的軀體外出探險。如今,這一虛幻的場景成為現(xiàn)實。

近日,美國科學(xué)家成功利用一只猴子發(fā)出指令、進而控制另一只猴子完成動作。這種“異體控制”技術(shù)將為癱瘓病人帶來福音。

實驗過程中,研究人員先在“主體”猴子的大腦中植入一個芯片,對多達(dá)100個神經(jīng)元的電活動進行監(jiān)控,并記錄它支配每個身體動作時的大腦神經(jīng)元電活動。而“阿凡達(dá)”猴子的脊髓中則植入了36個電極,嘗試刺激不同的電極組合及其對肢體運動產(chǎn)生的影響。

隨后,“阿凡達(dá)”猴子服用鎮(zhèn)靜劑,進入人工癱瘓狀態(tài)。研究人員將兩只猴子身上的儀器連接起來,使得“主體”猴子的大腦活動能夠?qū)崟r控制“阿凡達(dá)”猴子身體動作。

按照試驗流程,“主體”猴子被限制在一張?zhí)厥獾淖紊希媲坝幸粋€電腦屏幕,屏幕上有一個光標(biāo)和一個在兩點之間上下移動的綠色圓圈。此時,位于別處的“阿凡達(dá)”猴子已經(jīng)完全癱瘓,它的手上握有一個可360度轉(zhuǎn)向的操縱桿。這個操縱桿用來控制屏幕上的光標(biāo),以追逐目標(biāo)綠色圓圈。

當(dāng)“主體”猴子想要移動光標(biāo)時,它的大腦神經(jīng)信號被計算機解碼并實時傳送至“阿凡達(dá)”猴子的脊髓。此時,“阿凡達(dá)”猴子就能依據(jù)指令移動操縱桿,如果操作正確,“主體”猴子就能得到一杯果汁作為獎勵。實驗結(jié)果顯示,兩只猴子協(xié)作完成任務(wù)的成功率高達(dá)98%。

“我們的終極目標(biāo)是,利用這項技術(shù)使癱瘓人士重獲完全自然運動的能力。”一位研究人員說,“我認(rèn)為這在理論上是可行的,不過還需要更多努力才能實現(xiàn)。”

“阿凡達(dá)”式幻想成真 美科學(xué)家利用猴子實現(xiàn)異體控制

 

It may sound like the kind of mind control seen in sci-fi film Avatar, but scientists working on a cure for paralysis have successfully used the thoughts of one monkey to control the movement of another.

The study's co-author, Maryam Shanechi of Cornell University's School of Electrical and Computer Engineering, said: We demonstrate that a subject can control a paralysed limb purely with its thoughts.'

The discovery 'could have the potential to help paralysed patients regain control of their own limbs,' she added.

The master had a brain chip implanted that could monitor the activity of up to 100 neurons.

During training, the physical actions of the monkey were matched up with the patterns of electrical activity in the neurons.

The avatar had 36 electrodes implanted in the spinal cord and tests were performed to see how stimulating different combinations of electrodes affected movement.

The two monkeys were then hooked up so that the brain scans in one controlled movements in real time in the other.

A computer then decoded and relayed neural signals between the two.

The first monkey, dubbed the 'master', was restrained in a special chair in front of a computer screen showing a cursor and a green circle alternating between two spots.

The second animal, or 'avatar', was fully sedated in a separate enclosure with its arm strapped to a 360-degree joystick.

This joystick was used to move the cursor, and chase the circular target, on the screen in front of the 'master.'

As the 'master' thought of moving the cursor, its brain signals were decoded to determine which of the two targets it had in mind.

This data was relayed in real-time to the spinal cord of the sleeping avatar, whose arm manipulated the joystick accordingly.

Every time the cursor hit its target, the master received a squirt of juice as reward.

In 98% of tests, the master could correctly control the avatar's arm.

One of the researchers said: "The goal is to take people with brain stem or spinal cord paralysis and bypass the injury.

"The hope is ultimately to get completely natural movement, I think it's theoretically possible, but it will require an exponential additional effort to get to that point."

(來源:中國日報網(wǎng)愛新聞iNews 編輯:丹妮)

 

 
中國日報網(wǎng)英語點津版權(quán)說明:凡注明來源為“中國日報網(wǎng)英語點津:XXX(署名)”的原創(chuàng)作品,除與中國日報網(wǎng)簽署英語點津內(nèi)容授權(quán)協(xié)議的網(wǎng)站外,其他任何網(wǎng)站或單位未經(jīng)允許不得非法盜鏈、轉(zhuǎn)載和使用,違者必究。如需使用,請與010-84883631聯(lián)系;凡本網(wǎng)注明“來源:XXX(非英語點津)”的作品,均轉(zhuǎn)載自其它媒體,目的在于傳播更多信息,其他媒體如需轉(zhuǎn)載,請與稿件來源方聯(lián)系,如產(chǎn)生任何問題與本網(wǎng)無關(guān);本網(wǎng)所發(fā)布的歌曲、電影片段,版權(quán)歸原作者所有,僅供學(xué)習(xí)與研究,如果侵權(quán),請?zhí)峁┌鏅?quán)證明,以便盡快刪除。
 

關(guān)注和訂閱

人氣排行

翻譯服務(wù)

中國日報網(wǎng)翻譯工作室

我們提供:媒體、文化、財經(jīng)法律等專業(yè)領(lǐng)域的中英互譯服務(wù)
電話:010-84883468
郵件:translate@chinadaily.com.cn
 
 
主站蜘蛛池模板: 国产97在线视频 | 欧洲亚洲综合一区二区三区 | 亚洲一级高清在线中文字幕 | 欧美视频三区 | 亚洲综合日韩精品欧美综合区 | 亚洲免费网 | 日韩无砖专区体验区 | 久久欧美久久欧美精品 | 偷窥女厕国产在线视频 | 日韩成人在线观看视频 | 久久亚洲私人国产精品 | 精品日韩一区二区三区 | 久久在线精品 | 91免费公开视频 | 成人精品综合免费视频 | 一区二区三区视频 | 欧美亚洲免费久久久 | 一级毛片免费在线播放 | 久久精品毛片 | 日本一线a视频免费观看 | 在线综合视频 | 久久精品国产欧美日韩亚洲 | 日韩精品一区二区三区四区 | 亚洲天堂一区 | 中文字幕一区二区三区 精品 | 欧美日本高清视频在线观看 | 精品国产欧美一区二区三区成人 | 欧美黑粗特黄午夜大片 | 国产成人狂喷潮在线观看2345 | 亚洲三级在线看 | 国产亚洲精品国产第一 | 亚洲日产综合欧美一区二区 | 手机看片免费基地你懂的 | 国产高清视频免费观看 | 喷潮白浆 | 国产高清成人mv在线观看 | 91九色精品国产 | 女人张开腿 让男人桶视频 女人张开腿等男人桶免费视频 | 国产精品91在线 | 欧美日韩不卡一区 | 日韩毛片免费线上观看 |