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  2. Auditory brainstem response - Wikipedia

    en.wikipedia.org/wiki/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.

  3. Frequency following response - Wikipedia

    en.wikipedia.org/wiki/Frequency_following_response

    The recording procedures for the scalp-recorded FFR are essentially the same as the ABR. A montage of three electrodes is typically utilized: An active electrode, located either at the top of the head or top of the forehead, a reference electrode, located on an earlobe, mastoid, or high vertebra, and a ground electrode, located either on the other earlobe or in the middle of the forehead.

  4. Electrocochleography - Wikipedia

    en.wikipedia.org/wiki/Electrocochleography

    The auditory nerve action potential, also called the compound action potential (CAP), is the most widely studied component in ECochG. The AP represents the summed response of the synchronous firing of the nerve fibers. It also appears as an AC voltage. The first and largest wave (N1) is identical to wave I of auditory brainstem response (ABR ...

  5. Brainstem auditory evoked potential - Wikipedia

    en.wikipedia.org/wiki/Brainstem_auditory_evoked...

    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 stimulus in the hearing range , a more effective auditory stimulus contains a range of frequencies in the form of a short sharp click.

  6. Bone conduction auditory brainstem response - Wikipedia

    en.wikipedia.org/wiki/Bone_conduction_auditory...

    With Bone ABR, the waves are typically more rounded that with traditional auditory brainstem response. The maximum output for bone is around 50 dB nHL and should look similar to the 50 dB HL response of air conduction for people with normal hearing or with a mild SNHL. With conductive hearing losses, the latencies for air are shifted when ...

  7. Audiometry - Wikipedia

    en.wikipedia.org/wiki/Audiometry

    Evoked potential audiometry N1-P2 cortical audio evoked potential (CAEP) audiometry; ABR is a neurologic tests of auditory brainstem function in response to auditory (click) stimuli. Electrocochleography a variant of ABR, tests the impulse transmission function of the cochlea in response to auditory (click) stimuli. It is most often used to ...

  8. Visual reinforcement audiometry - Wikipedia

    en.wikipedia.org/.../Visual_reinforcement_audiometry

    Visual reinforcement audiometry (VRA) is a key behavioural test for evaluating hearing in young children. [ 1 ] [ 2 ] First introduced by Liden and Kankkunen in 1969, VRA is a good indicator of how responsive a child is to sound and speech and whether the child is developing awareness to sound as expected.

  9. Caloric reflex test - Wikipedia

    en.wikipedia.org/wiki/Caloric_reflex_test

    In medicine, the caloric reflex test (sometimes termed ' vestibular caloric stimulation ') is a test of the vestibulo-ocular reflex that involves irrigating cold or warm water or air into the external auditory canal. This method was developed by Robert Bárány, who won a Nobel Prize in 1914 for this discovery.