The BERA (Brainstem Auditory Evoked Response) test, also known as an auditory brainstem response test, is a non-invasive procedure that measures the electrical activity of the auditory pathway in response to sound stimuli. It helps in assessing the integrity and functionality of the auditory system, from the outer ear to the brainstem. The test is particularly useful in diagnosing hearing loss, auditory nerve disorders, and other neurological conditions related to hearing.