What animal told runners to start from a low start? Detailed answer

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What animal told runners to start from a low start? Detailed answer

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What animal told runners to start from a low start?

Until 1887, all runners stood at the start at full height, waiting for the command to start running. The low start was invented by American sprinter Sherrill after observing kangaroos that bend down to the ground before starting to move. When he, despite the protest of the judge and the ridicule of the audience, applied a new method, he immediately won the race.

Authors: Jimmy Wales, Larry Sanger

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Driving school for rats 29.10.2019

In the laboratory of the University of Richmond, biologists staged a rat race. For several months, the animals were taught to drive a vehicle to test how complex the rat brain is.

Before the experiment, the rodents were divided into two groups. Some grew up in a variety of environments with educational toys. Others were placed in an ordinary laboratory cage. Four months later, the rats were introduced to homemade cars. The cabin for little drivers was built from a plastic container. To start the motor, it was enough to stand on the floor and grab the copper wire. By pressing on certain parts of the wire, the driver could choose the direction of travel: right, left or straight ahead.

Rodents rode in a special arena, measuring 120 by 60 centimeters. As a reward for good driving, the rats received sweet corn rings. But over time, the task became more difficult, and in order to earn a treat, the animals had to travel an increasing distance.

The best drivers turned out to be rats from the first group - those who had previously led a more active lifestyle. According to researchers, upbringing in a diverse environment has a positive effect on animals. They grow up interested in learning and cope with it more easily.

Before and after testing, the animals were tested for hormone levels. It turned out that after the driving school the mental state of the rats improved, they felt more relaxed and calm. This was due to high levels of the hormone dehydroepiandrosterone, which counteracts stress. Moreover, in rats that were "driving", the content of dehydroepiandrosterone was higher than in ordinary passengers.

Perhaps the results will help psychologists create new effective methods of dealing with stress, in which stress will be expelled with the help of some specially designed complex activities, coupled with hormone therapy.

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