首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
Controlling Robots with the Mind Belle, our tiny monkey, was seated in her...
Controlling Robots with the Mind Belle, our tiny monkey, was seated in her...
admin
2020-12-24
23
问题
Controlling Robots with the Mind
Belle, our tiny monkey, was seated in her special chair inside a chamber at our Duke University lab. Her right hand grasped a joystick (操纵杆)as she 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 microwires — each wire finer than the finest sewing thread — into different regions of Belle’s motor cortex (脑皮层), the brain tissue that plans movements and sends instructions. Each of the 100 microwires lay beside a single motor neuron (神经元). 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 a 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, which she would control for the first time. As soon as Beliefs 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 into instructions 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. Srinivasan. 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
(同步),like dancers choreographed (设计舞蹈动作)by the electrical impulses sparking in 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 (神经的)disorder or spinal cord (脊髓) injury, but whose motor cortex is spared,to operate a wheelchair or a robotic limb.
The wires fixed under Belle’s cap were connected to
选项
A a plastic box next door.
B a computer at Cambridge University.
C a box of electronics in the booth.
D a box which, in turn, was linked to two computers.
答案
D
解析
转载请注明原文地址:https://ti.zuoweng.com/ti/DdsQKKKQ
相关试题推荐
WideWorldofRobots Engineerswhobuildandprogramrobotshavefascinatin...
WideWorldofRobots Engineerswhobuildandprogramrobotshavefascinatin...
WideWorldofRobots Engineerswhobuildandprogramrobotshavefascinatin...
WideWorldofRobots Engineerswhobuildandprogramrobotshavefascinatin...
WideWorldofRobots Engineerswhobuildandprogramrobotshavefascinatin...
WideWorldofRobots Engineerswhobuildandprogramrobotshavefascinatin...
WideWorldofRobots Engineerswhobuildandprogramrobotshavefascinatin...
下面的短文有15处空白,请根据短文内容为每处空白确定1个最佳选项。 YoungAdultsWhoExerciseGetHigher...
下面的短文有15处空白,请根据短文内容为每处空白确定1个最佳选项。 YoungAdultsWhoExerciseGetHigher...
下面的短文有15处空白,请根据短文内容为每处空白确定1个最佳选项。 YoungAdultsWhoExerciseGetHigher...
随机试题
除了了解客户的基本信息和初步需求外,理财师需要坦诚地让客户对理财规划服务有所认识
浓硫酸烧伤后,最佳的现场紧急处理方法为 A.立即到专科医院就诊 B.立即用碱
(180-182题共用备选答案) A.胃蛋白酶 B.淀粉酶 C.胰脂肪酶
下列关于胸膜项的描述不正确的是( )。
患者,男性,20岁。伤寒,体温38℃,不宜食用的食物是
D
工程项目成功度评价表格,是根据评价任务的()决定的。
进行体态表达技能的训练基础是()。 A.表情的训练B.与口语表达配合的训练
一般而言,售楼书销售资料包括( )、销售现场资料及其他资料等。A.海报B.传单C.专家意见书D.调查问卷
对城市发展与资源环境的关系,下列叙述不正确的是()A:资源环境是城市发展的支撑与约束条件B:城市是社会生活与矛盾的集合体C:健康的城市发展方式有利于资源环境