Auditory Brain stem Response (ABR audiometry), also known as Brainstem Evoked Response Audiometry (BERA), BAER (Brainstem Auditory Evoked Response audiometry), BAEP (Brain Auditory Evoked Potential) was first described by Jewett and Williston in 1971. It is a neuro- physiological test of auditory brainstem function and is an objective way of eliciting brain stem potentials in response to audiological click stimuli. ABR typically uses a click stimulus that generates a response from the hair cells of the cochlea, the signal travels along the auditory pathway from the cochlear nuclear complex to the inferior colliculus in mid brain and generates wave I to wave V. These waves are recorded by electrodes placed over the scalp. Even though ABR provides information regarding auditory function and sensitivity, it is not a substitute for other methods of audiological evaluation. It should be always viewed in conjunction with other audiological investigations.

Keywords: Auditory, Brain stem, Audiometry, Evoked.