Hearing, that sense that never stops .. But the ear does not only address the acoustic stimuli that reach it, only, since the inside of the ear is another organ, working to keep our balance.
On the occasion of World Hearing Day on the 3rd of March, the World Health Organization calls on the world population to keep their ears and pay attention to the effects of hearing damage.
We hear better than we see. The sense of hearing treats about 50 impressions per second, twice what the eye does. The ear has the ability to distinguish 400,000 votes, as well as knowing its exact source. About 25,000 capillary cells operate at full capacity, 24 hours a day.
There is another organ inside the ear, somewhat hidden, behind the hearing aisle, and above the inner ear. There are three arcs intertwined in each other that define our physical balance, and tell us, for example, where is the top, and where is the bottom, and for this there are fine hairs in the paths of these arches, surrounded by a liquid. This excitement is sent as a nerve signal to the brain. The milieu around us must neither be too noisy nor too much.
According to the data of the German Environment Agency, the risk of developing cardiovascular diseases increases when exposed to a sound power starting from 65 decibels, which is equivalent to, for example, the sound of television with the usual strength in the room.
Nor is absolute restraint unhealthy, as the German ear and nose doctor, Bodo Schiffmann, says that guards at the Guantanamo camp used this method of torture.
The ability of a person to hear decreases with age. It was found through a study by researchers at the University of Allen, Germany, that the hearing of men is damaged with age before the hearing of women.
Accordingly, the average 55-year-old man hears as badly as a 70-year-old woman. Study owners say the difference between hearing loss between the sexes at the age of 70 is about 20 decels. Some researchers suggest that the female hormone estrogen may be the cause.
Studies have suggested that human ears continue to grow throughout their lifespan, and that they are significantly greater in the elderly. The volume of ears increases during puberty, by about one centimeter. It turned out to the German Professor, Karsten Nemets and the team of researchers under the supervision of the city of Berlin, and after measuring the volume of the ear in 1500 people in Berlin that the outer part of the ear flint becomes wider and longer with age.
The reason for this, researchers say, is that the skin of the ear becomes more relaxed and elastic with age. Others see that the ear grows because the hearing retracts, and that the increase in the size of the ear flap may instead offset the retraction of hearing.