Auditory brainstem response

Graph showing a typical Auditory Brainstem Response

The auditory brainstem response (ABR), also called brainstem evoked response audiometry (BERA) or brainstem auditory evoked potentials (BAEPs) or brainstem auditory evoked responses (BAERs)[1][2] is an auditory evoked potential extracted from ongoing electrical activity in the brain and recorded via electrodes placed on the scalp. The recording is a series of six to seven vertex positive waves of which I through V are evaluated. These waves, labeled with Roman numerals in Jewett/Williston convention, occur in the first 10 milliseconds after onset of an auditory stimulus. The ABR is termed an exogenous response because it is dependent upon external factors.[3][4][5]

The auditory structures that generate the auditory brainstem response are believed to be as follows:[4][6]

  • Wave I through III – generated by the auditory branch of cranial nerve VIII and lower
  • Wave IV and V – generated by the upper brainstem

Waves I and II originate from the distal and proximal auditory nerve fibers, wave III from the cochlear nucleus, IV showing activity in the superior olivary complex, and wave V with the lateral lemniscus.[7]

  1. ^ "Auditory Brainstem Response (ABR) Evaluation". www.hopkinsmedicine.org. 2022-05-27. Retrieved 2024-02-16.
  2. ^ Young, Allen; Cornejo, Jennifer; Spinner, Alycia (2024), "Auditory Brainstem Response", StatPearls, Treasure Island (FL): StatPearls Publishing, PMID 33231991, retrieved 2024-02-16
  3. ^ Eggermont, Jos J.; Burkard, Robert F.; Manuel Don (2007). Auditory evoked potentials: basic principles and clinical application. Hagerstwon, MD: Lippincott Williams & Wilkins. ISBN 978-0-7817-5756-0. OCLC 70051359.
  4. ^ a b Hall, James W. (2007). New handbook of auditory evoked responses. Boston: Pearson. ISBN 978-0-205-36104-5. OCLC 71369649.
  5. ^ Moore, Ernest J (1983). Bases of auditory brain stem evoked responses. New York: Grune & Stratton. ISBN 978-0-8089-1465-5. OCLC 8451561.
  6. ^ DeBonis, David A.; Donohue, Constance L. (2007). Survey of Audiology: Fundamentals for Audiologists and Health Professionals (2nd ed.). Boston, Mass: Allyn & Bacon. ISBN 978-0-205-53195-0. OCLC 123962954.
  7. ^ Møsller, Aage R.; Jannetta, Peter J.; Møsller, Margareta B. (November 1981). "Neural Generators of Brainstem Evoked Potentials Results from Human Intracranial Recordings". Annals of Otology, Rhinology & Laryngology. 90 (6): 591–596. doi:10.1177/000348948109000616. ISSN 0003-4894. PMID 7316383. S2CID 11652964.

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