首页
登录
职称英语
Locusts, which can consume their own weight in food each day, have a large n
Locusts, which can consume their own weight in food each day, have a large n
游客
2023-11-09
8
管理
问题
Locusts, which can consume their own weight in food each day, have a large neuron called the locust giant movement detector(LGMD)located behind their eyes. The LGMD releases bursts of energy whenever a locust is on a collision course with another locust or a predatory bird.
A few years ago Rind and her colleagues studied the activity of the LGMD as locusts watched action scenes from the movie Star Wars. The team found that the LGMD releases more energy when something is coming directly at the locust.
These spikes of energy, called action potentials, prompt the locusts to take evasive action. The entire process from motion detection to reaction takes about 45 milliseconds—or 45 thousandths of a second.
"Locusts, like most insects, can see many more images per second than we do. This means they can react in time to things that are approaching very rapidly and so make their escape before collision," Rind said.
The locusts’ ability to see many more images per second than humans gives them a remarkable view of the world. For humans, it would be like watching everything go by in slow motion; Rind added.
And because the insects only detect things that are on a collision course with them, the locusts are ignorant of all other movements. It’s a particularly useful trait, as the locusts travel in dense swarms akin to rush hour traffic.
"The LGMD system is complemented by the brain of the locust, which provides the necessary experience and knowledge to really react according to the situation," said Jorge Cuadri, a project engineer with Spain’s National Centre of Microelectronics. Cuadri is helping to develop the circuitry(电路装置)for the locust-inspired crash avoidance technology.
Cuadri and his colleagues are responsible for adapting the locust collision-avoidance system to the automotive environment.
Their adapted system is based on a single, integrated step that combines visual optics and electronics. The conventional way of doing this would involve two steps: First, a camera would capture the image. Second, a digital processor would analyze it.
The two-step approach, which uses radar images, is expensive and currently limited only to luxury cars, Rind said. [br] What would immediately happen if human beings were endowed with the power to see a good many images in quite a short instant?
选项
A、Every movement would become so easily observable that it is just like in slow motion.
B、Human beings would be ignorant of all other movements except things that are on a crash route with them.
C、Everything around would pass by at a lower speed.
D、Human beings would be very sensitive to those cars that are about to bump.
答案
A
解析
题干中的假设与蝗虫具有的能力一致(蝗虫每秒钟看到的图像比人类要多许多),第5段最后一句说到,蝗虫的这种能力在人类身上(For humans...),就好比我们在看慢镜头一样,故A正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3171911.html
相关试题推荐
Ascientistwhowantstopredictthewayinwhichconsumerswillspendtheir
Ascientistwhowantstopredictthewayinwhichconsumerswillspendtheir
Ascientistwhowantstopredictthewayinwhichconsumerswillspendtheir
Ascientistwhowantstopredictthewayinwhichconsumerswillspendtheir
Ascientistwhowantstopredictthewayinwhichconsumerswillspendtheir
Ascientistwhowantstopredictthewayinwhichconsumerswillspendtheir
Ascientistwhowantstopredictthewayinwhichconsumerswillspendtheir
Ascientistwhowantstopredictthewayinwhichconsumerswillspendtheir
Ascientistwhowantstopredictthewayinwhichconsumerswillspendtheir
Ascientistwhowantstopredictthewayinwhichconsumerswillspendtheir
随机试题
Mostofusaretaughttopayattentiontowhatissaid—thewords.Wordsdop
料质量检验方法包括( )。A.书面检验 B.无损检验 C.外观检验 D.
根据《房屋建筑与装饰工程工程量计算规范》GB50854-2013规定,关于金属窗
存货数量的确定方法主要有( )。A.定期盘存制 B.永续盘存制 C.先进先出
《民法典》规定,遗产管理人应当履行的职责不包括()。A.偿还被继承人的债务
患者男性,46岁,有糖尿病病史已16年,最近一次发生酮症酸中毒,经医院抢救,病情
正常情况下,在医院出生的男婴和女婴的数量大体相同。在某大城市的一家大医院,每周有
根据《药品流通监督管理办法》,关于药品生产、经营企业购销药品行为的说法,错误的是
为减弱压缩机排气的周期性脉动,稳定管网压力,同时可进一步分离空气中的油和水分,通
糖代谢中与底物水平磷酸化有关的化合物是A、3-磷酸甘油醛 B、3-磷酸甘油酸
最新回复
(
0
)