美国科学60秒 SSS 2012-10-17（在线收听） |
Researchers have known about these high-pitched squeaky songs for years. But they only recently discovered that mice can learn the songs of other mice. Such vocal learning is a rarity among animals. We know of only three kinds of birds—parrots, hummingbirds and songbirds—and some mammals—like humans, whales, dolphins, sea lions, bats and elephants—that have demonstrated the ability to learn the vocal patterns of other animals. That is, until now. Scientists at Duke University observed that when two male mice of different lineages were kept together, the animals gradually learned to match the pitch of their songs to one another. And when the researchers examined the mice, they found that the rodents can also form the correct brain-to-vocal-cord connections to control the sounds they make. The research is published in the journal PLoS ONE.
The mouse songs are admittedly primitive. But the findings left scientists on a high note. |
| 原文地址：http://www.tingroom.com/lesson/sasss/2012/10/216271.html |