Tests For Hearing
To distinguish between cochlear and post cochlear damage test done is: (DNB Dec 2010)
|A||Brainsterm evoked response audiometry|
|C||Pure tone audiometry|
|D||Auditory cochlear potential|
BERA testing objectively assesses the neural synchrony of the-auditory system from the level of eight nerve to the midbrain
.'. It is very useful in distinguishing between cochlear pathology. and retrocochlear pathology for SNHL
Cochlear SN.HL - occurs due to damage of hair cells mainly.
Retrocochlear SNHL- occurs due to lesion of VHlth nerve or its central connection. Hence -BERA can diagnose a retrocochlear pathology.