首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Locusts, which can consume their own weight in food each day, have a large neuron called the locust giant movement detector(LGMD
Locusts, which can consume their own weight in food each day, have a large neuron called the locust giant movement detector(LGMD
admin
2016-12-06
46
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.
What energy does "action potentials" refer to?
选项
答案
The spikes of energy released by LGMD./The bursts of energy released by LGMD.
解析
action potentials来自第3段,该段第一句指出action potentials指的是these spikes of energy,但本题不能笼统地照抄these spikes,指的是什么,也要说明。联系上两段可知these spikes of energy指的就是由LGMD发出的能量,因此,本题完整的答案应该是The spikes of energy released by LGMD,spikes和第1段的bursts同义,可在答案中互相替换。
转载请注明原文地址:https://kaotiyun.com/show/h3JK777K
0
专业英语四级
相关试题推荐
Womendriversaremorelikelytobeinvolvedinanaccident,accordingtoscientists.Researchers【C1】______6.5millioncar
Mostpeoplewhogoonlinehavemainlypositiveexperience.But,【C1】______anyendeavor—traveling,cooking,orattendingschool—t
ImmigrantstotheUKarebeingtestedontheirEnglishskillsbeforebeingabletoclaimincome-relatedbenefitsunderanewsch
Thegovernmentmustincreasethe______ofreformstoavoidfurtherbloodshed.
Formanyyears,wehavebeenledtobelievethataperson’sintellectualintelligenceisthegreatestpredictorofsuccess.Soci
Thereisanunquestionablelinkbetweenjoblossesand______services.
Tobefrank,I’dsooneryou______agoodreviewyesterdayforthecomingtest.
Histripthroughtheworldmadeaninteresting______.
Thatjewelryshopisreported______inbroaddaylightyesterday.
Theraysofthemorningsunbegintoshinethrough______windows,castingaglowofgoldoverthelandscape.
随机试题
莫氏圆锥各个号码的圆锥半角是相同的。()
下列不属于地方职级督学的是()
下列关于神经纤维膜上电压门控Na+通道与K+通道共同点的描述,错误的是
房地产价格评估简称为()。
某矿业公司产出的矿产原材料金属含量比较高,是富矿,在市场上的售价比其他矿高。目前冶炼产品的市场竞争激烈,从经济效益的角度来看,对自己的矿进行进一步冶炼再出售不合算,所以西部矿业决定停止加工冶炼业务,直接出售自己的矿,以获取更大的利润。这反映的风险管理工具是
《义务教育化学课程标准(2011年版)》在第四部分“实施建议”中提出了“评价建议”。以下观点不是其所提倡的是()。
我国古代有“伤春悲秋”之说,古人往往借诗词歌赋抒发悲秋的情怀,下列不属于这一情怀的是()。
浏览器/服务器架构是现阶段非常流行的数据库应用系统架构。在此架构中,应用服务器起到了非常重要的作用。下列关于应用服务器的说法,错误的是()。
Duringrecentyearswehaveheardmuchabout"race":howthisracedoescertainthingsandthatracebelievescertainthingsand
Itdoesn’tcomeasasurprisetoyoutorealizethatitmakesnodifferencewhatyoureadorstudyifyoucan’trememberit.You
最新回复
(
0
)