BERA is an electro-physiological test procedure which studies the electrical potential generated at the various levels of the auditory system starting from cochlea to cortex.
Procedure: The stimulus either in the form of click or tone pips is transmitted to the ear via a transducer placed in the insert ear phone or head phone. The waves of impulses generated at the level of brain stem are recorded by the placement of electrodes over the scalp.
Why is BERA Done ?
It is an effective screening tool for evaluating cases of deafness due to retrocochlear pathology
Used in screening newborns for deafness
Used for intra- operative monitoring of central and peripheral nervous system
Diagnosing suspected demyelination disorders