An audiometer is a special instrument used to identify and monitor hear loss and hearing disorders. It has standard calibrations which help to obtain the best results of the condition. Audiometric tests are carried out in a quiet soundproof room. Headphones are provided to the patient to place on his ears. The professional requests you to sit and remain calm.
The headphones are connected to a machine that produces tones under various frequencies or pitches and at different intensities or levels. The audiologist requires you to respond by rising of your hand whenever you hear a sound. This has to be done in a way that he understands when one side of the ear is not alright by raising the left hand if the left ear is okay and the same for the right ear and hand. Some professional however, provide a button that you can press. The results produced are then analyzed and recorded on an audiogram.
There are many conditions that have contributed to people losing their hearing ability. One of such condition is called acoustic neuroma. This is a slow growing tumor on the cranial nerve, which has the responsibility of the sense of hearing and balance. In addition to the loss of hearing ability, it can also cause paralysis of the face.
Sporting activities or accidents can damage the eardrum which in turn causes hear loss. Vestibulocochlear nerve is also very sensitive and when damaged can affect the ability to hear. Conditions like tinnitus and vertigo can also result to hear loss if care is not taken.
Audiometry is comprised of many tests which are done according to the age and the type of test. The principle which is used to check for hear loss on a newborn baby is the same as that used on an adult the only difference is the way of doing it. Babies cannot report when there is a problem with their ears and they require special equipment to test them. It is important to test a baby when asleep to avoid interruptions.
To test babies, the audiologist uses an otoacoustic emission test. This test is fast, simple and the child does not feel any pain. A tiny earpiece which contains a microphone and a small loudspeaker is securely placed in the ear. The loudspeaker produces clicking sound inside the ear which is passed to the cochlea. A well functioning cochlea responds by resending the sound to the ear canal which is heard by the microphone.
If the sound is not heard, there could be a problem with the ear though the audiologist has to rule out other factors. If the child was not steady, he could have interrupted the process of testing and also a noisy room can also affect the results. If the test is repeated and no change is seen then an automated auditory brainstem response test is done to give accurate results.
A technique called reinforcement audiometry is used to test young children. This test uses speakers as the sound outlet. The child is required to respond by confirming the location of the speaker when he hears the sound. This is done repeatedly at different frequencies. Adults and much grown children are tested using a technique called pure tone audiometry where an audiometer is used to produce sound which is relayed to the headphones at varied intensities and frequencies.
The headphones are connected to a machine that produces tones under various frequencies or pitches and at different intensities or levels. The audiologist requires you to respond by rising of your hand whenever you hear a sound. This has to be done in a way that he understands when one side of the ear is not alright by raising the left hand if the left ear is okay and the same for the right ear and hand. Some professional however, provide a button that you can press. The results produced are then analyzed and recorded on an audiogram.
There are many conditions that have contributed to people losing their hearing ability. One of such condition is called acoustic neuroma. This is a slow growing tumor on the cranial nerve, which has the responsibility of the sense of hearing and balance. In addition to the loss of hearing ability, it can also cause paralysis of the face.
Sporting activities or accidents can damage the eardrum which in turn causes hear loss. Vestibulocochlear nerve is also very sensitive and when damaged can affect the ability to hear. Conditions like tinnitus and vertigo can also result to hear loss if care is not taken.
Audiometry is comprised of many tests which are done according to the age and the type of test. The principle which is used to check for hear loss on a newborn baby is the same as that used on an adult the only difference is the way of doing it. Babies cannot report when there is a problem with their ears and they require special equipment to test them. It is important to test a baby when asleep to avoid interruptions.
To test babies, the audiologist uses an otoacoustic emission test. This test is fast, simple and the child does not feel any pain. A tiny earpiece which contains a microphone and a small loudspeaker is securely placed in the ear. The loudspeaker produces clicking sound inside the ear which is passed to the cochlea. A well functioning cochlea responds by resending the sound to the ear canal which is heard by the microphone.
If the sound is not heard, there could be a problem with the ear though the audiologist has to rule out other factors. If the child was not steady, he could have interrupted the process of testing and also a noisy room can also affect the results. If the test is repeated and no change is seen then an automated auditory brainstem response test is done to give accurate results.
A technique called reinforcement audiometry is used to test young children. This test uses speakers as the sound outlet. The child is required to respond by confirming the location of the speaker when he hears the sound. This is done repeatedly at different frequencies. Adults and much grown children are tested using a technique called pure tone audiometry where an audiometer is used to produce sound which is relayed to the headphones at varied intensities and frequencies.
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