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brain stem auditory evoked response test (brayn stem AW-duh-TOR-ee eh-VOKT reh-SPONTS …)
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 ABR test, auditory brain stem response test, and BAER test.