NCI Dictionary of Cancer Terms
ABR test (... test)
A test used to detect some types of hearing loss, such as hearing loss caused by injury or tumors that affect nerves involved in hearing. Electrodes are placed on the head and certain tones or clicking sounds are made. The electrodes measure nerve signals in the brain when it reacts to the sounds. Also called auditory brain stem response test, BAER test, and brain stem auditory evoked response test.