Weber’s Test
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Transcript of Weber’s Test
Weber’s Test
Results & Discussion
Weber’s Test
A tuning fork was gently struck on the heel of the hand
The vibrating tuning fork was placed at any midline structure such as the vertex, nasal bone, or incisors.
The subjects were asked to localize on which side the sound is heard.
Correct Response: sound is heard equally on both ears.
Sensorineural loss = loudest sound in unaffected ear
Conduction loss = loudest sound in affected ear (hears vibrations only)
Weber’s Test
WEBER’S TEST Sound heard loudest in…
Normal Hearing Both ears
Left conductive deafness Left ear
Left complete sensorineural deafness Right ear
Right conductive deafness Right ear
Right complete sensorineural deafness Left ear
Weber’s Test
ResultsSubjects Localization of Sound
Salvador Heard in both ears equally
Sanchez Heard in both ears equally
San Juan Heard in both ears equally
Santos Heard in both ears equally
Seneris Heard in both ears equally
Siapno Heard in both ears equally
Soliman Heard in both ears but louder in left ear
Soliza Heard in both ears equally
Sombilla Heard in both ears but louder in left ear
Sosa Heard in both ears but louder in left ear
Sumayao Heard in both ears equally
Tabora Heard in both ears but louder in right ear
Talabong Heard in both ears equally
Discussion
The Ernst Weber’s test (1934) is used to identify the better hearing cochlear. It is used in conjunction with Rinne’s test and is of most use in patients with unilateral hearing loss.
The correct response is equal loudness of sound on both ears.
The results in the experiment showed “lateralization on the Weber” by four of the thirteen subjects and indicated some form of hearing loss.
Three subjects heard the sound louder on left ear.
This lateralization of sound perception can be explained in two ways:
1. Sensorineural loss on the Right Acoustic nerve unable to carry the sound sound is
heard only from the left side
2. Conduction loss on the Left Air conduction is lost sound waves are blocked
from entering the inner ear subject is hearing exclusively by bone conduction the other ear has both the influence of air conduction and bone conduction
Air conduction is better than bone conduction. Therefore, right ear will be less aware of the bone conduction than the left ear subject hears the sound on the left.
Discussion
The results need to be interpreted with care and only in conjunction with further hearing tests.
Discussion
Types of Hearing Loss
Conductive Hearing Loss External ear obstructions (earwax, foreign
bodies) Middle ear obstructions (otitis) Otosclerosis
Sensorineural Hearing Loss Hair cell degeneration Presbycusis Lesion of cochlear nerve