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ABR test

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Auditory brain stem response test, or ABR test used to detect some types of hearing loss, such as hearing loss caused by injury or tumors that affect nerves involved in hearing.

Normal ABR test results
Normal ABR test results


ABR focuses only on the function of the inner ear, the acoustic (hearing) nerve, and part of the brain pathways that are associated with hearing.

How ABR test is performed?

  • 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.
  • Because this test does not rely on a person’s response behavior, the person being tested can be sound asleep during the test.

Other names

Also called auditory brain stem response test, BAER test, and brain stem auditory evoked response test.


WikiMD Resources - ABR test

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