Brainstem Evoked Response Audiometry (BERA), also known as Auditory Brainstem Response (ABR), is an objective and highly accurate hearing test used to evaluate the auditory nerve pathways from the inner ear to the brainstem. This test plays a vital role in identifying hearing loss, especially in individuals who are unable to respond to regular hearing tests such as newborns, infants, young children, and uncooperative patients.