首页
登录
职称英语
Belle, our tiny monkey, was seated in her special chair inside a chamber at
Belle, our tiny monkey, was seated in her special chair inside a chamber at
游客
2023-07-21
48
管理
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. [br] 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://www.tihaiku.com/zcyy/2856933.html
相关试题推荐
[originaltext]M:Didyouseethat(23)TVspecialonNormanRockwelllastnight?
[originaltext]M:Didyouseethat(23)TVspecialonNormanRockwelllastnight?
PeopleintheUnitedStateshonortheirparentswithtwospecialdays:Mothe
PeopleintheUnitedStateshonortheirparentswithtwospecialdays:Mothe
PeopleintheUnitedStateshonortheirparentswithtwospecialdays:Mothe
PeopleintheUnitedStateshonortheirparentswithtwospecialdays:Mothe
PeopleintheUnitedStateshonortheirparentswithtwospecialdays:Mothe
PeopleintheUnitedStateshonortheirparentswithtwospecialdays:Mothe
Anyonewhoseesaspecialtypeofairplanewithitsturningwingsknowsiti
Anyonewhoseesaspecialtypeofairplanewithitsturningwingsknowsiti
随机试题
Nogreatscientisteverwantshispupilstobemeregramophonerecordsfaithfull
______manmustfearwhentravelinginspaceisradiationfromthesun.A、WhichB、
Thehumanbrainhastwosides,andeachsidehasdifferentworktodo.T
A
某工程现场φ25mmHRB400钢筋的焊接采用闪光对焊方式,检测结果见右表。请你
Thechangeinthatvillagewasmiraculou
关于单纯疱疹病毒,正确的是A.血液传播B.自然宿主是人C.可导致先天性感染D.引
投资者将期货作为资产配置的组成部分,借助期货能够()。A.为其他资产进行风险对
《药品经营管理规范》对零售企业陈列的要求有A.药品与非药品分区陈列,并有明显隔离
常见的心理咨询的手段不包括A.宣泄 B.领悟 C.挖掘幼年体验 D.增强自
最新回复
(
0
)