Now it’s settled bats to be able to visualize their location using echolocation. But we are still thinking about the meaning of this – how bats capture their vocabulary and use it to determine the location of objects.
Mu paper released Monday, researchers provide evidence that bats play a key role because they are born with a sense of voice speed. How did the researchers learn about this phenomenon? By family planning mileme in high helium environments, in which very low oxygen increases the speed of sound.
Echolocation is really simple. The bat makes a noise, which throws things in its place and then returns to the bats’ ears. For very distant objects, the word takes a long time to return, giving a very distant meaning.
But bats can also use echolocation to identify an animal in the middle of a trip or to select a place to land. In this case, they need to have a very long knowledge. It is not enough to know that the branch you want to climb is closer than the house behind it; You need to know when to start a difficult movement to get a branch, or you can run or stand still.
The easiest way to get the full distance is to understand the flow of words. That is, a delay between words and repetition will give the right distance. But how do you measure up if bats know the speed of the noise?
Eran Amichai and Yossi Yovel of Tel Aviv University thought that there was an easy way out: to change the pitch. One of the factors affecting the pitch of a voice is the amount of air. And there is a simple way to adjust the amount of air: whipping it with air lighter than air. In this way, the authors selected helium and raised a batch of bats in the atmosphere where there was enough helium to increase the noise speed by 15 percent.
(Even if the bats that grew up in the area sounded funny they were left untouched.)
The noise level can mean that the echoes will return to the bats very quickly. This could mean that the object that makes up those echo can be identified as being closer than it actually is. So if we could know how a bat is approaching an object, we can understand how the speed of the voice moves.
Unfortunately, the type of bat used in this experiment changes its tone as it approaches the object. The reason is that by following the sounds that bats make as they approach an object, we can determine how much they think they are close to it.
To do this experimentally, the researchers enriched the bats in a fenced-in compound that was a little farther away, with one group being lifted into the air or the other being raised by high helium emissions. He then switched the shape of the two groups. For helium-laden bats, the low pressure of the fresh air makes the echoes take longer to reach and makes the grazing space more visible. Conversion would be true for bats that grew up in the open air.
As a result, all groups of bats do the same. He realized that the tower was too close to helium and too far from ordinary gas. So it doesn’t matter what the bats learned from the environment they grew up in; their sense of speed of speech was similar. This shows that minds are innate to bats.
It is not surprising because bats change weather with their ups and downs, which also changes the speed of the voice, often more than 5%. As a result it may seem beneficial to be able to adapt to these changes depending on the circumstances. But Amichai and Yovel kept mature bats in place of helium for weeks and found no evidence that they would change their minds at the cafeteria. This was true even in the atmosphere where it contained 27% helium. As a result, the bat’s notice of voice speed seems to be closed instead.