It is not clear why, but hearing is the poor relation of our five senses. While we never accept to see badly and can not bear not to feel or taste, we wait too late to relieve his ears, while solutions exist
There are 4 million hearing impaired people in our country. Not just old hard leaf as they say affectionately, but a million and a half under 55 and 400,000 under 18 years old. But to hear is to be able to communicate. It can be concluded that almost 10% of the population does not communicate anymore. But if the care is early, the solution will be effective. It is therefore in the child that screening must begin. A family history, of course, but a weight of less than 2 kg at birth or an infection of the fetus during pregnancy, should make you think. Then, later, a too calm sleep, the delay of appearance of the first words after 17 months, an inattention of everything which escapes of his visual field, must provoke an exploration of the ear. There is a whole battery of examinations that make it possible to perfectly quantify the deficit and especially to know where the problem comes from. Everything is very logical. Thus, even if the mechanism of hearing is very complex, the sound must first enter our body through amplifying tubes, which can be blocked in the event of an obstacle or otitis. The sound then falls on the eardrum, which plays the role of drumskin to transmit itself to the three smallest bones of our body, the hammer, the anvil and the stirrup, whose role is to transform the acoustic wave into waves. vibratory. Again, surgery can work wonders. The sound then arrives in a snail-shaped structure, the cochlea, lined with 15,000 cells that will transform the vibration into electricity. All that remains is for the auditory nerve to take this nerve impulse to the brain. These cells are in 4 rows. The deeper transmits the bass, and the closer we get to the outside, the more transmitted sounds come from the treble. The outer layer being damaged first, it will be understood that the presbycusis, the aging of our ear, concerns first of all the acute sounds, that is to say the s, the ch, the i and the u. One would think that once the nerve is reached, medicine is powerless. This is not the case - unlike the nerve of the eye - and the specialists are affirmative when they claim that the majority of the deafness are today perfectly improvable.