auditory brainstem response

auditory brainstem response
(ABR) for sensorineural hearing loss: a test that tracks nerve signals arising in the internal ear as they travel along the auditory nerve to the brain region responsible for hearing. A small speaker placed near the ear makes a clicking sound, and electrodes record the nerve signal as it travels. The test can determine where along the nerve there is a lesion responsible for sensorineural hearing loss, often due to a benign tumor.

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  • Auditory brainstem response — The auditory brainstem response (ABR) is an auditory evoked potential extracted from ongoing electrical activity in the brain and recorded via electrodes placed on the scalp. The resulting recording is a series of vertex positive waves of which I …   Wikipedia

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  • response — 1. The reaction of a muscle, nerve, gland, or other excitable tissue to a stimulus. 2. Any act or behavior, or its constituents, that a living organism is capable of emitting. Reflexes are usually excluded because they are typically elicited by a …   Medical dictionary

  • auditory evoked potential — (AEP) in electroencephalography, changes in waves in response to sound; see also brainstem auditory evoked p …   Medical dictionary

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