“I can hear the speech, but I don’t know what I am talking about.” This is a sentence that many deaf patients often complain about, even after they have correctly selected a hearing aid. Why?
Compared with normal hearing people, deaf patients not only have the problem of volume reduction, but also have the problem of frequency distortion (poor frequency resolution). Although all the sounds can be heard with the hearing aid, the patient is still impossible. Every word is heard clearly, especially in a noisy environment. This is because, despite the correct compensation of the hearing aid, the patient still has the following problems: poor time resolution, poor frequency resolution, and inherent noise reduction. difference.
The inner ear has the ability to analyze the acoustic signal. After the inner ear is damaged, the auditory analysis ability will be significantly reduced. However, because our hearing ability has sufficient room, we can ensure that we understand it without 100%. Therefore, it is not serious. The inner ear injury does not prevent the patient from completely losing the auditory ability.
The auditory center has more important acoustic signal analysis capabilities. The auditory center is damaged and the auditory resolution is worse. There is a deafness caused by central disorders. It is called the central palsy. The typical central palsy patients can hear the sound completely, even Very small voice, but they can’t understand, can’t hear.
We can also reverse the reason: the inner ear and/or the central nervous system damage is the main cause of inaudible. Unfortunately, most patients with neurological deafness have damage to the inner ear and auditory center, but only to varying degrees. And it is currently a world problem, so many nervous deaf complaints are heard but not clear.
Jinghao medical hearing aid reminder: hearing aids need to be professionally “fitted”, it is very important to choose a professional hearing aid fitting center and hearing aid fittings! All patients and friends have any hearing problems can call the Jinghao medical consultation, or personally Come to the fitting center experience. Hearing aid free consultation phone: +86-18566295705
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