The Auditory Brainstem Response (ABR) Evaluation is a test to measure how well each ear can pick up sounds. It also tells how well the hearing nerve sends the information to the brain. It is commonly done on infants and small children, or anyone who cannot cooperate with routine testing.  Most children over the age of 6 months will require some form of sedation or anesthesia in order to sleep through an ABR.

ABR testing is a harmless and painless procedure.