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Juggler - intellectual specialty

02.12.2004

Until now, scientists believed that the adult brain does not grow, and from a certain age even decreases due to aging.

Researchers from the Universities of Regensburg and Jena (Germany) proved that this is not the case. The experimenters divided a group of 24 young men and women with a mean age of 22 into two equal subgroups. Members of one of them were taught to juggle for three months, the other did nothing.

With the help of magnetic resonance imaging, the brain sizes of the subjects were compared before and after learning to juggle. It turned out that the trainees clearly increased the layer of gray matter (that is, neurons) in the left posterior sulcus in the cerebral cortex, located between the upper and lower lateral lobes of the brain. It is believed that this area perceives the movements of objects in three-dimensional space.

In the control subgroup, which was not trained in juggling, such an increase in gray matter was not found. True, after the jugglers stopped training, the additional neurons they acquired disappeared again.

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Scientists at the University of Cambridge have named the most accurate and vigilant predator on Earth. It turned out to be the so-called robber fly or ktyr.

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While observing the insects, the experts used high-speed cameras that recorded the behavior of the whales before capturing their prey. According to scientists, the special structure of the eyes makes ktyr an excellent killer. It can target its prey from a great distance and never misses.

Ktyri is a family of carnivorous dipterous insects of the suborder short-whiskers. They are active predators with large eyes and a slender body in dense pubescence. Ktyrs are distributed on all continents except Antarctica, they prevail in the subtropics.

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