Basic Audiology Exam 2 - OAEs, ABRs, and Pseudohypacusis Questions & Answers 2023/2024
Why do Audiologists use a test battery of multiple tests? - ANSWER-Because getting the best picture possible requires the synthesis of information gleaned from a multitude of tests, both objective and subjec...
Why do Audiologists use a test battery of multiple tests? - ANSWER-Because getting the best picture
possible requires the synthesis of information gleaned from a multitude of tests, both objective and
subjective
We should be asking what the objective tests tell us alone and what they tell us in conjunction with the
subjective portions of the audiogram
Name the routine battery of audiological tests - ANSWER-*CASE HISTORY FIRST*
1. Otoscopic inspection
2. Immittance testing
- Tympanometry
- ART
3. OAE
4. Pure tone audiometry - AC
5. Speech audiometry
6. Pure tone audiometry - BC
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7. Pseudohypacusis tests if needed
8. ART if needed
*OAE testing is considered routine for new patients, but not for established clients. Can be used for
established patients if there is reason, such as suspicion of ANSD
, What are additional tests that can be performed - ANSWER-Auditory Brainstem Response (ABR)
What does OAE testing measure? - ANSWER-Outer hair cell motility
Recorded as a signal:noise ratio that is evaluated as being present or absent
What does ABR testing measure? - ANSWER-Electrical activity in the 8th CN and pathways within the
brainstem in response to sound
Recorded as a waveform using electrodes
OTOACOUSTIC EMISSIONS - ANSWER-Sound waves produced by the OHCs in the cochlea that escape
back out of the ear canal
Measure OHC motility
What parts of the ear are involved with most OAE testing (withstanding OAE suppression) - ANSWER-1.
External ear canal
2. Middle ear
3. Inner ear (OHC)
What are the OHCs main job in the cochlea? - ANSWER-They act as amplifiers
Is the efferent auditory system involved in OAE testing? - ANSWER-Kind of -
Our ears are always connected, so they are involved, but that isn't what we measure. We measure the
OHCs in the contralateral ear.
We will only see efferent information if we put noise in the contralateral ear and then record OAEs
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