Brainstem Auditory Evoked Potential, also known as BAEP, is a type of test used to determine the functionality of a person's auditory nerve and brainstem. There are several synonyms for the term, such as Auditory Evoked Potential, Auditory Brainstem Response, Brainstem Auditory Response, and Evoked Auditory Potentials. The test is done by placing electrodes on the scalp, which measures the electrical activity of the auditory nerve and brainstem in response to sound stimuli. The information obtained from BAEP is useful in diagnosing and monitoring various conditions such as hearing loss, brainstem disorders, and tumors affecting the auditory system.