老鼠的学歌能力与人类相似-凯发k8官网

老鼠的学歌能力与人类相似

文章来源：未知文章作者：enread 发布时间：2012-10-11 07:44 字体： [ ]　

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us researchers say that mice may have the ability to learn songs based on the sounds they hear.

美国研究人员称，老鼠有根据它们听到的声音学习歌曲的能力。

they found that when male mice were housed together they learned to match the pitch of their songs to each other.

mice also share some behavioural and brain ¹ involved in ² learning with songbirds（黄莺） and humans, say the researchers.

but some scientists are sceptical（怀疑的）, saying the evidence doesn't support the claim.

details of the study are published in the journal, plos one.

previous research in this field has shown that male mice can sing complex songs when exposed to females and these play an important part in courtship（求爱，求婚）.

these murine serenades are ³. at between 50 and 100khz, they are far above the hearing range of humans. when processed to make them audible to humans, they sound like a series of ⁴ whistles.

rare skill

it has long been assumed that mice were ⁵ of modifying the sequence or the pitch of these sounds. this ability, called vocal learning, is rare in the natural world. it is restricted to some birds such as parrots and song birds along with whales, dolphins, sea lions, bats and elephants.

but in these experiments, researchers from duke university in north carolina say they found that mice have both the brain circuits and the behavioural attributes consistent with vocal learning.

dr erich jarvis, who ⁶ the study, told bbc news that it had changed his understanding of the way mice make sound.

"in mice we find that the pathways that are at least ⁷ these vocalisations are in the forebrain, in places where you actually find them in humans," he said.

he says the study does not have clear evidence that mice have the very same vocal abilities as birds and humans. he believes there is a ⁸ where different species have vocal skills to different degrees.

"we think mice are intermediate in this ability between a chicken and a song bird or even a non human ⁹ and a human," he said.

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收听单词发音

1
n.机械( mechanism的名词复数 )；机械装置；[生物学] 机制；机械作用
参考例句：
the research will provide direct insight into molecular mechanisms. 这项研究将使人能够直接地了解分子的机理。来自《简明英汉词典》 he explained how the two mechanisms worked. 他解释这两台机械装置是如何工作的。来自《简明英汉词典》

2
adj.直言不讳的；嗓音的；n.[pl.]声乐节目
参考例句：
the tongue is a vocal organ.舌头是一个发音器官。 public opinion at last became vocal.终于舆论哗然。

3
adj.超声的；n.超声波
参考例句：
it was very necessary for people to take type-b ultrasonic inspection regularly.定期进行b超检查是十分必要的。 sounds are classified into two kinds: sonic and ultrasonic.声波分为两类，即普通声波与超声波。

4
adj.可怜的，伤心的
参考例句：
her voice was small and plaintive.她的声音微弱而哀伤。 somewhere in the audience an old woman's voice began plaintive wail.观众席里，一位老太太伤心地哭起来。

5
adj.无能力的，不能做某事的
参考例句：
he would be incapable of committing such a cruel deed.他不会做出这么残忍的事。 computers are incapable of creative thought.计算机不会创造性地思维。

6
v.监督，监视( oversee的过去式 )
参考例句：
he will go down as the president who oversaw two historic transitions. 他将作为见证了巴西两次历史性转变的总统，安然引退。来自互联网 dixon oversaw the project as creative director of design research studio. 狄克逊监督项目的创意总监设计研究工作室。来自互联网

7
调整( modulate的现在分词 )；（对波幅、频率的）调制；转调；调整或改变（嗓音）的音调
参考例句：
in his horn solo,he kept modulating from key to key. 他在喇叭独奏时不断地变调。 water vapour and clouds are the primary variables modulating direct solar absorption. 水汽和云是调节直接太阳吸收的主要要素。

8
n.谱，光谱，频谱；范围，幅度，系列
参考例句：
this is a kind of atomic spectrum.这是一种原子光谱。 we have known much of the constitution of the solar spectrum.关于太阳光谱的构成，我们已了解不少。

9
n.灵长类（目）动物，首席主教；adj.首要的
参考例句：
14 percent of primate species are highly endangered.14%的灵长类物种处于高度濒危状态。 the woolly spider monkey is the largest primate in the americas.绒毛蛛猴是美洲最大的灵长类动物。