The sound vibrations are then transmitted through the middle ear via the ossicular chain before reaching the cochlea.
The purpose of the outer ear is to direct sounds onto the tympanic membrane. The inner ear: Cochlea (organ of hearing), vestibular labyrinth (organ of balance) Clinical and animal studies have shown that cochlea is stimulated by bone conduction mainly through two routes: The mechanism underlying sound lateralization of the Weber test has been intriguing to health professionals for many decades. In conductive hearing loss, the sound should lateralize to the affected side however, in patients with sensorineural hearing loss, the sound lateralizes to the contralateral side. The Weber test is often combined with the Rinne test to detect the location and nature of the hearing loss. The inner ear mediates sensorineural hearing. The outer and middle ear mediate conductive hearing. The test can detect unilateral conductive and sensorineural hearing loss. The Weber test is a useful, quick, and simple screening test for evaluating hearing loss. The Weber test has been mainly used to establish a diagnosis in patients with unilateral hearing loss to distinguish between conductive and sensorineural hearing loss. Tuning fork tests have been the mainstay of otologic examination for more than a century.
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