When Babies Have Hearing Abnormalities

Of all the congenital problems for which babies can be tested, abnormal hearing is the most common. Considering how two to four babies per 1,000 enter this world with a significant hearing impairment, the condition is actually 20 times more frequent than phenylketonuria, a metabolic problem for which new-borns are routinely screened. Estimates range from 14 months to 2 1/2 years when it comes to the average age at which a serious hearing impairment is diagnosed. Go to this site for further information on hearing loss.

It is really not early enough even though it sounds like it. The director of the National Institute on Deafness and other Communication Disorders in Bethesda, Maryland said that in the past, we haven't really appreciated that even when only weeks old babies were just lying there, their brains were already developing the capacity for language. Here, if they receive no language input during a critical window of time, in this case a time that stretches back to birth, babies lose a great opportunity to learn language. In this case, a good chance of communicating normally, either in sign or spoken language by the time he or she begins school, comes with early detection but with late detection and intervention comes a long, dreary game of catching up ahead. As a professor at the University of Colorado in Boulder and lead author of the studies mentioned, if a child's problem is discovered late this does not mean that all hope is lost but it will be harder. This is precisely why hearing advocates have been pressing for across the board screening for hearing problems in new-borns.

Infant screening is very important given the baby boom let surge that the US is experiencing right now the director of government relations for the American Speech Language Hearing Association, a professional group that advocates early screening, mentioned. Nowadays, several states have already enacted legislation for universal new-born screening programs. With this, it is easy to test the hearing of an adult. What people do here is press buttons and parrot back phrases in response to the sounds they hear when the audiologists put them in booths. It is a different matter to test the hearing of a baby.

Because of an odd property of the ears that has been discovered and appreciated only in the past few decades, it is possible for a baby's ears can do the talking. When it comes to the ears, they can receive and emit sounds. Sharpening our ability to hear in the process, the outer hair cells in our ears which are the source of these sounds move around in response to noises. In this case, the movements cause the eardrum to vibrate and this sends noises back out into the world. This site teaches you about causes of hearing loss.

What the ears do is make low level noises when exposed to sound but human cannot hear these. These are noises which are loud enough for instruments to detect. Here, the essence of screening for hearing problems in new-borns is having sounds that are not generated. The process where a click of sound is sent into a baby's ear and then a little microphone detects any sound coming out only takes technicians a few minutes to accomplish. It is detecting anything from mild to profound hearing loss that is possible with this test.