手機APP下載

您現在的位置: 首頁 > 在線廣播 > 科學美國人 > 科學美國人地球系列 > 正文

科學美國人60秒:蜜蜂會做加減法

來源:可可英語 編輯:aimee ?  VIP免費外教試聽課 |  可可官方微信:ikekenet
 下載MP3到電腦  批量下載MP3和LRC到手機
加載中..
29DZLh_HNQwYs)

Ic)Y,3;F8#U;5

This is Scientific American's 60-second Science, I'm Annie Sneed.
It takes a big brain—a human brain—to do math. Or so you might assume. But scientists have found that other animals, such chimpanzees, monkeys, and even pigeons can perform some addition and subtraction. Now new research shows that honeybees—with brains the size of sesame seeds—can perform basic math.
Researchers put honeybees through 100 trials to train them to add and subtract. They put the bees in a Y-shaped maze and presented them with a certain number of either yellow or blue shapes. Yellow indicated the bee should subtract, while blue meant they should add.
The bee then entered the "decision chamber," where it was presented with a correct answer on one side and an incorrect answer on the other side. If they picked the right answer they were rewarded with a sugary solution. If not, they got bitter tonic water. The researchers also put the bees through another test trial without a reward or punishment to make sure there weren't any scent marks influencing the bees' choices.

C-aC8xTK9pPXH

蜜蜂.jpg

O%3d|]]=-)A3Sa.WA

At first the bees picked answers at random. "You see that the ability of the bees to do it starts at about chance level, 50%, showing us the bees are just choosing randomly. But over time, competence comes up to about 80%, so they actually start to perform quite well."
Scarlett Howard, one of the study authors and a postdoctoral research fellow in neurobiology and cognition at Paul Sabatier University in France. She says the bees were even able to add and subtract correctly when presented with a number they had never seen before. The study is in the journal Science Advances.
"Things like this let us know there's a lot of complexity there and their brains might not be as simplistic as we once thought."
Thanks for listening for Scientific American — 60-Second Science. I'm Annie Sneed.

RK+Y,Np7_-#zNyk

MhHEcCtME2XDYd=wY

F[^.cnhDUQ5Ph5]n[email protected]^;26ONmb9zNbkIY6FZb0ty

重點單詞   查看全部解釋    
competence ['kɔmpitəns]

想一想再看

n. 能力,管轄權,技能

聯想記憶
random ['rændəm]

想一想再看

adj. 隨機的,隨意的,任意的
adv. 隨

 
addition [ə'diʃən]

想一想再看

n. 增加,附加物,加法

聯想記憶
randomly ['rændəmli]

想一想再看

adv. 任意地,隨便地,胡亂地

 
decision [di'siʒən]

想一想再看

n. 決定,決策

 
relaxed [ri'lækst]

想一想再看

adj. 放松的, 松懈的,隨意的 relax的過去式(

 
scent [sent]

想一想再看

n. 氣味,香味,痕跡
vt. 聞出,發覺,使

 
solution [sə'lu:ʃən]

想一想再看

n. 解答,解決辦法,溶解,溶液

聯想記憶
assume [ə'sju:m]

想一想再看

vt. 假定,設想,承擔; (想當然的)認為

聯想記憶
perform [pə'fɔ:m]

想一想再看

v. 執行,運轉,舉行,表演

聯想記憶
?
發布評論我來說2句

    最新文章

    可可英語官方微信(微信號:ikekenet)

    每天向大家推送短小精悍的英語學習資料.

    添加方式1.掃描上方可可官方微信二維碼。
    添加方式2.搜索微信號ikekenet添加即可。
    河南快三遗漏数据