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
50
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] Who was the final aim of the research to help?
选项
答案
Unable to move but whose motor cortex is not damaged.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2856935.html
相关试题推荐
PeopleintheUnitedStateshonortheirparentswithtwospecialdays:Mothe
PeopleintheUnitedStateshonortheirparentswithtwospecialdays:Mothe
PeopleintheUnitedStateshonortheirparentswithtwospecialdays:Mothe
PeopleintheUnitedStateshonortheirparentswithtwospecialdays:Mothe
PeopleintheUnitedStateshonortheirparentswithtwospecialdays:Mothe
PeopleintheUnitedStateshonortheirparentswithtwospecialdays:Mothe
PeopleintheUnitedStateshonortheirparentswithtwospecialdays:Mothe
Anyonewhoseesaspecialtypeofairplanewithitsturningwingsknowsiti
Anyonewhoseesaspecialtypeofairplanewithitsturningwingsknowsiti
Anyonewhoseesaspecialtypeofairplanewithitsturningwingsknowsiti
随机试题
Itmaybeoneoftheworld’sgreatshoppingdestinations,butLondon’sRegen
Theydecidedtohavedonewiththisfutileargumenthalfanhourago.Theunderl
Mostgrowingplantscontainmuchmorewaterthanallothermaterialscombin
[originaltext]IrunadesignstudioinNewYork.Everysevenyears,Iclose
下列选项中,包含矛盾双方相互转化观点的是( )A.千里之行,始于足下 B
关于赖特的罗伯茨住宅,说法错误的是( )。A.草原风格 B.以壁炉为中心
2008年含山蚕山节被列入第( )批国家级非物质文化遗产名录。A.一 B.二
简述我国幼儿教育理念在教育改革过程中发生了哪些变革。
《中华人民共和国教师法》于l993年l0月31日第八届全国人民代表大会常务委员会
女性月经来潮是由于( )。A.血中的E2水平降低,P水平升高 B.血中的E2
最新回复
(
0
)