Conducting A Hearing Test
Abnormal hearing is the most common out of the multitude of congenital problems for which babies can be tested
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In this case, per 1,000, there are two to four babies who will enter this world with a significant hearing impairment making the condition 20 times more frequent than phenylketonuria, a metabolic problem for which new-borns are routinely screened.
Ranging from 14 months to 2 1/2 years are the estimates considering the average age at which a serious hearing impairment is diagnosed.
Although it sounds early enough, it is really not. What the director of the National Institute on Deafness and other Communication Disorders in Bethesda, Maryland said was that babies are not simply things that lay around and in the past people failed to accept the fact that even though they are only a few weeks old their brains were already developing the capacity for language.
If they receive no language input during a critical window of time, referring to a time that stretches back to birth, they lose a great opportunity to learn language.
With early detection comes a good chance of communicating normally, either in sign or spoken language by the time he or she begins school, but if there is a case of late detection and intervention, a child can expect a long, dreary game of catching up ahead.
According to a professor at the University of Colorado in Boulder and lead author of the studies, if a child's problem is discovered late then there can still be hope but the situation will be harder.
This is the reason why there are a lot of hearing advocates who want across the board screening for hearing problems in new-borns.
According to the director of government relations for the American Speech Language Hearing Association, a professional group that advocates early screening, given the baby boom let surge that the US is experiencing right now infant screening is highly necessary.
Today, several states have enacted legislation for universal new-born screening programs. What it is for is to test the hearing of an adult.
Audiologists simply put people in a booth and have them press buttons and parrot back phrases in response to the sounds they hear. When the hearing of a baby is tested, another process is done.
Considering an odd property of the ears that has been discovered and appreciated only in the past few decades, a baby's ears can do the talking here. Aside from receiving sounds, the ears can also emit sounds.
In response to noises, the source of these sounds which are the outer hair cells in our ears actually cause our ability to hear to be sharpened. As a result, the movements vibrate the eardrum; sending noises back out into the world.
For the ears, they have a tendency to make low level noises when exposed to sound but these are not audible to humans. Here, these are loud enough for instruments to detect. For the essence of screening for hearing problems in new-borns, this involves dealing with sounds that are not generated.
Here, the technicians only need a few minutes to complete the process where a click of sound is sent into a baby's ear and then a little microphone detects any sound coming out. Taking this test into consideration, you can detect anything from mild to profound hearing loss.
by: John Chambers
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