This Weber bone conduction test developed by Ernst Heinrich Weber. This test is to determine the different hearing power of your ear. If you feel any difference in both ears that you two different hearing loss.
When you testing with Weber test so you have no idea which type of hearing loss you have until specialist tells you.
The Weber test is a test of lateralization and very useful for those who have asymmetrical hearing loss. The inner ear is much more sensitive to sound via air conduction than bone conduction (in other words we can say, air conduction is far better than bone conduction).
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Hearing test using Weber test in three different ways
- Tuning fork tests
- Clinical voice test
- Audiometry
When a specialist starts to test. A vibrating 512 Hz tuning fork placed at the middle of the skull. The patient is asked whether the sound is heard more in one particular ear or if the sound is heard more where it originates from in the middle of the skull.
Tuning Fork: Tuning fork tests provide a reliable diagnostic method to assess hearing loss. Audiometric tuning forks consist of U-shaped bar of elastic metal (usually steel). After setting the tuning fork (usually C2 = 512Hz) in vibration, for the testing of hearing impairments. So, its stem is placed on the top of the skull, in the midline exactly.
Tuning fork has a two-pronged metal fork which is act as a clear resonator. The tuning fork is a great healing tool. So, it can use for many treatments including Rinne test, X-ray and sound therapy.
What is the Rennie and Weber test
The Rinne and Weber tests are the exams that test for hearing loss. They help us to determine whether you have conductive or sensorineural hearing loss. This result allows a doctor to come up with a treatment plan for your hearing changes.
A Rinne test evaluates hearing loss by comparing both with air conduction to bone conduction. Air conduction hearing occurs through the air near the ear, and it involves the ear canal and eardrum. The bone conduction hearing occurs through vibrations picked up by the ear’s specialized nervous system.
A Weber test is another way or you can say a better option to evaluate conductive and sensorineural hearing losses.
The conductive hearing loss occurs when sound waves are unable to pass through the middle ear to the inner ear. This problem can be caused by the ear canal, eardrum, or middle ear
Testing Procedure
At the point when analyst begins tuning-fork in Weber test, an elastic hasty hammer or her elbow, strikes one firmly enough vibration make a sound clearly apparent by the examiner at 30 cm. In the Weber test, the fork is hanging on the vertex of the skull in the midline, or on the forehead, or chin.
Remove artificial teeth and utilize the upper gum. Continuously evacuate a patient’s wig if using the vertex. Ask the patient, “Do you hear this better in the left ear or right ear?” If the patient hesitates, at that point the Weber test demonstrates that sound isn’t being referred.
- The doctor strikes a tuning fork and places it in the middle of your head.
- You note where the sound is best heard: the left ear, the right ear, or both equally.
Results of the Weber test
Your two ears are equal. If you heard the tone in the center of your forehead, then your two ears are equal. You may still have a hearing loss through equally in both ears. Your hearing loss is either conductive or SNHL sensorineural in both ears.
So, if you heard the tone in only one ear, then you may have more of a conductive loss on that side where you heard it or one cochlea performs better than the other, in an SNHL.
- The normal hearing will produce equal sound in both ears.
- A conductive loss will cause the sound to be heard best in the abnormal ear.
- A sensorineural loss will cause the sound to be heard best in the normal ear.
What is the approach after Rinne and Weber tests?
Rinne and Weber’s tests have no side effects. After you have a test, you will be able to discuss any necessary treatment options with your doctor.
Further examinations and tests will help to determine the correct location and the reason for the type of hearing loss you have. Your doctor will suggest ways to reverse, correct, improve or manage off your special hearing problem.
Interpretation
- With the symmetrical hearing or asymmetrical hearing loss, the sound should be central.
- Accompanied by asymmetrical sensorineural loss, the sound should be heard in the better ear.
- With an asymmetrical conductive hearing loss, the sound should be heard in the poorer ear.