Bing sample

Bing sample (A. Bing) is a method of differential diagnosis between the violation of the functions of conductive and zvukooperatora systems. A sounding tuning fork set on the mastoid process investigated. Under normal hearing, or with the defeat of sound perceiving apparatus (for example, cochlear neuritis), after the subject ceases to hear the tuning fork, he again begins to perceive the sound, if you close yourself ear canal finger (positive sample Bing). In violation of the functions of conductive this does not happen (negative test Bing). Bpts can be carried out by the method of tonal audiometry (see). When comparing the level of hearing in conducting sound through a bone with indoor and outdoor auditory passage.