Bing test
The Bing test is a tuning fork test of Otorhinolaryngology , with the occlusion effect can be demonstrated at closure of the ear canal. The test can be used to differentiate between sensorineural disorder and conduction disorder in one ear.
The foot of a vibrating tuning fork is placed on the mastoid process of the temporal bone ("mastoid", Latin processus mastoideus , a bone extension of the temporal bone directly behind the ear) and the auditory canal is closed or opened again with the finger. The closure of the auditory canal leads to a change in hearing perception in people with normal hearing and people with impaired sound sensation, in particular the sound heard appears louder. This effect does not occur in people with conduction problems.
The effect becomes even clearer if the tuning fork is placed on the vertex, as in the Weber test , because when the auditory canal is closed, there is now a lateralization, i.e. the sound can be heard in the closed ear.
The Bing test became known as " Faux Bing ", as a "false Bing test". If one closes the auditory canal of the other, normal ear in the Weber test with a one-sided sound conduction disorder with lateralization of the sound into the sound conduction disordered ear, the sound is not heard in the closed ear, i.e. lateralized to the other side, but the sound "stays" in conduction disturbed ear and is heard louder there.
For further tuning fork tests see also: Gellé test , Rinne test , Weber test .
Individual evidence
- ↑ A. Bing: A new tuning fork attempt. Contribution to the differential diagnosis of diseases of the mechanical sound conduction and nervous hearing apparatus. In: Vienna. med. Bl. , Volume 41, 1891.
- ^ JE Fournier: Sur le mecanisme de la conduction osseuse. I. Les phenomena principaux et les théories de la conduction osseuse. In: Ann. otolaryng. , 1953, p. 401.
