首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Belle, our tiny monkey, was seated in her special chair inside a chamber at our Duke University lab. Her right hand grasped a jo
Belle, our tiny monkey, was seated in her special chair inside a chamber at our Duke University lab. Her right hand grasped a jo
admin
2010-10-14
32
问题
Belle, our tiny monkey, was seated in her special chair inside a chamber at our Duke University lab. Her right hand grasped a joystick as the watched a horizontal series of lights on a display panel. She knew that if a light suddenly shone and she moved the joystick left or right to correspond to its position, she would be sent a drop of fruit juice into her mouth.
Belle wore a cap glued to her head. Under it were four plastic connectors, which fed arrays of mi crowires-each wire finer than the finest sewing thread-into different regions of Belle’s motor cortex, the brain tissue that plans movements and sends instructions. Each of the 100 microwires lay beside a single motor neuron. When a neuron produced an electrical discharge, the adjacent microwire would capture the current and send it up through a small wiring bundle that ran from Belle’s cap to a box of electronics on a table next to the booth. The box, in turn, was linked to two computers, one next door and the other half a country away.
After months of hard work, we were about to test the idea that we could reliably translate the raw electrical activity in living being’s brain-Belle’s mere thoughts-into signals that could direct the actions of a robot. We had assembled a multijointed robot arm in this room, away from belle’s view, that she would control for the first time. As soon as Belle’s brain sensed a lit spot on the panel, electronics in the box running two real-time mathematical models would rapidly analyze the tiny action potentials produced by her brain cells. Our lab computer would convert the electrical patterns that would direct the robot arm. Six hundred miles north, in Cambridge, Mass, a different computer would produce the same actions in another robot arm built by Mandayam A. Srinvasan. If we had done everything correctly, the two robot arms would behave as Belle’s arm did, at exactly the same time.
Finally the moment came. We randomly switched on lights in front of Belle, and she immediately moved her joystick back and forth to correspond to them. Our robot arm moved similarly to Belle’s real arm. So did Srinivasan’ s Belle and the robots moved in synchrony, like dancers choreographed by the electrical impulses sparking inn Belle’s mind.
In the two years since that day, our labs and several others have advanced neuroscience, computer science and microelectronics to create ways for rats, monkeys and eventually humans to control mechanical and electronic machines purely by "thinking through," or imagining, the motions. Our immediate goal is to help a person who has been unable to move by a neurological disorder or spinal cord injury, but whose motor cortex is spared, to operate a wheelchair or a robotic limb.
What’s their final goal?
选项
答案
To control mechanical and electronic machines purely by "thinking through."
解析
转载请注明原文地址:https://jikaoti.com/ti/vilFFFFM
0
大学英语四级
相关试题推荐
Rumoristhemost【C1】______wayofspreadingstories—bypassingthemonfrommouth【C2】______mouth.Butcivilizedcountriesinnor
Ifyouweretobeginanewjobtomorrow,youwouldbringwithyousomebasicstrengthsandweaknesses.Successorfailureinyou
AscientificpanelconvenedbytheWorldHealthorganizationrecommendedguidelinesonFridayfordoctorsconductingclinicalst
Therearemanywaysofdefiningsuccess.Itisaccuratetosaythateachofushasourownconceptofsuccesstotheextentthat
Chimp(黑猩猩)ShowHallmarkofHumanCulture,StudyFindsResearchershavediscoveredthatchimpanzeesnotonlyteacheachoth
Chimp(黑猩猩)ShowHallmarkofHumanCulture,StudyFindsResearchershavediscoveredthatchimpanzeesnotonlyteacheachoth
A、Heisinterestedinit.B、Heapprovesofit.C、Heobjectstoit.D、Hedoesn’tcareaboutit.C观点态度题。女士问男士对于在村里建原子能发电站的看法,男士明确表
A、Travelingbybusorear.B、Livinginanexpensiveway.C、Enjoyingcitylife.D、Findingplacestolivein.C作者在第二段中指出,..iseas
Thereisapopularbeliefamongparentsthatschoolsarenolongerinterestedinspelling.Thisis,however,a【S1】______.Noscho
Ilovetravelingbytrain.Fast【B1】______,slowlocaltrainswhichstopateverystation,【B2】______trainstakingbusinessmento
随机试题
肿瘤的致病因素不包括()
完带汤用于治疗下列哪种带下病
设备的开发设计包括( )。
信息是以口头、书面或电子等方式传递的()、新闻、情报。
工资核算系统初始化中的部门编码和员工类型编码是必须编制的内容。()
中国公民李某出版散文集取得稿酬收入40000元,将其中6000元通过民政部门捐赠给贫困山区。李某稿酬所得应缴纳个人所得税()元。(2011年)
实习生张明的第三次课,课的主要内容是太极拳(复习)和100米测试,上课前,他把写好的教案送给指导教师郭老师审查,郭老师仔细看了整个教案,当看到“预计运动负荷脉搏曲线图”(图1)中所提供的相关信息后,马上对张明说:“你的基本部分安排有问题……”。问题:
王强今年15周岁,一次在操场上玩游戏时,因为与班里的同学陈锋发生争执,愤怒之余用石块打中陈锋头部,导致陈锋因失血过多而死亡。对此,王强应承担()
ThePortuguesegiveagreatdealofcredittoonemanforhavingpromotedseatravel,thatman______princeHenrythenavigato
Hungryprehistorichunters,notclimatechange,droveelephantstoextinctionduringthePleistoceneera(更新世),newresearchsug
最新回复
(
0
)