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2025-06-25T22:27:02Z

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{{Short description|Aspect of neuroanatomy}}
{{See also|Auditory brainstem response}}
{{Infobox interventions
| Name = Brainstem auditory evoked potential
| Image =
| Caption =
| ICD10 =
| ICD9 = 794.09
| ICD9unlinked =
| MeshID =
| LOINC =
| OtherCodes =
| MedlinePlus = 003926
| eMedicine = 1137451
}}

In human [[neuroanatomy]], '''brainstem auditory evoked potentials''' ('''BAEPs'''), also called '''brainstem auditory evoked responses''' ('''BAERs'''), are very small [[auditory evoked potential]]s in response to an auditory stimulus, which are recorded by [[electrodes]] placed on the scalp. They reflect neuronal activity in the [[auditory nerve]], [[cochlear nucleus]], [[superior olive]], and [[inferior colliculus]] of the [[brainstem]]. They typically have a response latency of no more than six milliseconds with an [[amplitude]] of approximately one microvolt.

Due to their small amplitude, 500 or more repetitions of the auditory stimulus are required in order to average out the random background electrical activity. Although it is possible to obtain a BAEP to a [[Pure tone audiometry|pure tone stimulus]] in the [[hearing range]], a more effective auditory stimulus contains a range of frequencies in the form of a short sharp click.

Long and Allen<ref>{{cite journal|last=Long|first=KJ|last2=Allen|first2=N|title=Abnormal brain-stem auditory evoked potentials following Ondine's curse|journal=Archives of Neurology|date=October 1984|volume=41|issue=10|pages=1109–10|pmid=6477223|doi=10.1001/archneur.1984.04050210111028}}</ref> were the first to report the abnormal BAEPs in an alcoholic woman who recovered from [[acquired central hypoventilation syndrome]]. These investigators hypothesized that their patient's brainstem was poisoned, but not destroyed, by her chronic alcoholism.

BAER testing is also recommended for dogs<ref>{{cite web |url=http://www.thekennelclub.org.uk/services/public/glossary/screening-scheme.aspx?id=BAER+Programme |title=BAER Programme |website=[[The Kennel Club]] |accessdate=December 13, 2019}}</ref> and [[Congenital sensorineural deafness in cats|white cats]].<ref name=":0">{{Cite web |title=BAER testing for white cats |url=https://www.gccfcats.org/breeding-cats/new-to-breeding/testing/baer-testing-for-white-cats/ |access-date=14 September 2023 |website=gccfcats.org |publisher=[[Governing Council of the Cat Fancy]]}}</ref>

==References==
{{Reflist}}

{{EEG}}

{{DEFAULTSORT:Brainstem Auditory Evoked Potentials}}
[[Category:Electroencephalography]]
[[Category:Evoked potentials]]
[[Category:Hearing]]
[[Category:Audiology]]

{{Compu-neuro-stub}}

Brainstem auditory evoked potential - Revision history

imported>Fadesga: /* References */