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
23
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] How far was Belle from robot arm?
选项
答案
Six hundred.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2856932.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
Anyonewhoseesaspecialtypeofairplanewithitsturningwingsknowsiti
Anyonewhoseesaspecialtypeofairplanewithitsturningwingsknowsiti
Anyonewhoseesaspecialtypeofairplanewithitsturningwingsknowsiti
Anyonewhoseesaspecialtypeofairplanewithitsturningwingsknowsiti
随机试题
Ournewpricelistisenclosed,andallorderspostedafterApril30mustbeinv
Ifourbrainswerecomputers,we’dsimplyaddachiptoupgradeourmemory.
Hemighthavebeenkilled______thearrivalofthepolice.A、exceptforB、butfor
以下哪项不符合建筑物围护结构隔热措施的要求?()A.设通风屋顶时,风道长度不
患者,女性,50岁,诊断为嗜铬细胞瘤。探查肿瘤时血压骤升至220/140mmHg
因经济行为需要,资产评估人员基于原地续用的持续经营假设,拟采用重置成本法评估,某
下列不属爱国人士的是()A、汪精卫 B、钱学森 C、吉鸿昌 D、邓稼先
下列不可视为合格投资者的是( )。A.社会保障基金、企业年金等养老基金 B.
标准贯入试验锤击数实测值N=18,则砂土的密实度为()。 A.密实B.中
下列各项符合融资融券交易一般规则的有()。A:未了结相关融券交易前,客户融券卖出
最新回复
(
0
)