Audiology Final UPDATED ACTUAL Exam
Questions and CORRECT Answers
What are the different types of Tympanograms, and what do they represent? - CORRECT
ANSWER - Type A: (falls in the shaded region) normal middle ear
Type A sub s: ("subtract"= small) hypomobile tympanic membrane
Type A sub d: ("add"= big) hypermobile tympanic membrane and Tympanic Membrane
perforation
Type B: (flat) Indicative of pathology or fluid accumulation
Type C: (super negative) suggestive of Eustachian tube dysfunction
What type of test is being displayed? - CORRECT ANSWER - Auditory Brainstem
Response (ABR)
What type of test is being displayed? - CORRECT ANSWER - Tympanogram
What type of test is being displayed? - CORRECT ANSWER - Otoacoustic Emissions
Data (OAE)
If hearing loss is conductive or has a conductive component - CORRECT ANSWER - you
cannot obtain acoustic reflexes
A waveform that reflects the electrophysiological function of the central auditory nervous system
in response to sound - CORRECT ANSWER - Auditory Evoked Potentials
For Auditory Evoked Potentials, you need - CORRECT ANSWER - - a signal generator
- earphones of some kind
- an amplifier
Electrode Placements for AEPs - CORRECT ANSWER - There are 4 placements
, - Noninverting Vertex (top of skull area)
- Common Ground Forehead (middle of forehead area)
- Inverting Ear lobe (both ear lobes)
The Family of Auditory Evoked Potentials (AEPs) - CORRECT ANSWER --
Electrocochleography (ECoG)
- Auditory Brainstem Response (ABR)
- Middle Latency Response (MLR)
- Late Latency Response (LLR)
- Auditory Steady State Response (ASSR)
Applications of AEP measurement - CORRECT ANSWER - - Infant hearing screening
- Prediction of hearing sensitivity for all ages
- Diagnostic assessment of peripheral and central auditory nervous system function
- Monitoring of auditory nervous system function during surgery (interoperative monitoring)
Differential Amplification - CORRECT ANSWER - - An instrument used to improve
signal-to-noise ratio (SNR) that is designed to provide common-mode rejection.
- It is also known as the preamplifier.
- It cancels out activity that is common to both electrodes, such as 60 Hz noise from lights or
electrical fixtures.
- Rejection helps eliminate activity from outside sources (such as noise from lights, movement,
or electrical fixtures)
- If the activity is identical or common in both electrodes, it will be eliminated
What is the importance of signal averaging when gathering data for the Auditory Brainstem
Response (ABR)? - CORRECT ANSWER - The purpose of signal averaging is to
eliminate the unrelated activity (background noise) and reveal the auditory evoked potential
(AEP). With Signal averaging, you are taking more than one signal (electrical potentials) at a
time and then averaging them (can take the signal thousands of times before averaging). The
more you run the test (N), the more accurate your results will be.
Questions and CORRECT Answers
What are the different types of Tympanograms, and what do they represent? - CORRECT
ANSWER - Type A: (falls in the shaded region) normal middle ear
Type A sub s: ("subtract"= small) hypomobile tympanic membrane
Type A sub d: ("add"= big) hypermobile tympanic membrane and Tympanic Membrane
perforation
Type B: (flat) Indicative of pathology or fluid accumulation
Type C: (super negative) suggestive of Eustachian tube dysfunction
What type of test is being displayed? - CORRECT ANSWER - Auditory Brainstem
Response (ABR)
What type of test is being displayed? - CORRECT ANSWER - Tympanogram
What type of test is being displayed? - CORRECT ANSWER - Otoacoustic Emissions
Data (OAE)
If hearing loss is conductive or has a conductive component - CORRECT ANSWER - you
cannot obtain acoustic reflexes
A waveform that reflects the electrophysiological function of the central auditory nervous system
in response to sound - CORRECT ANSWER - Auditory Evoked Potentials
For Auditory Evoked Potentials, you need - CORRECT ANSWER - - a signal generator
- earphones of some kind
- an amplifier
Electrode Placements for AEPs - CORRECT ANSWER - There are 4 placements
, - Noninverting Vertex (top of skull area)
- Common Ground Forehead (middle of forehead area)
- Inverting Ear lobe (both ear lobes)
The Family of Auditory Evoked Potentials (AEPs) - CORRECT ANSWER --
Electrocochleography (ECoG)
- Auditory Brainstem Response (ABR)
- Middle Latency Response (MLR)
- Late Latency Response (LLR)
- Auditory Steady State Response (ASSR)
Applications of AEP measurement - CORRECT ANSWER - - Infant hearing screening
- Prediction of hearing sensitivity for all ages
- Diagnostic assessment of peripheral and central auditory nervous system function
- Monitoring of auditory nervous system function during surgery (interoperative monitoring)
Differential Amplification - CORRECT ANSWER - - An instrument used to improve
signal-to-noise ratio (SNR) that is designed to provide common-mode rejection.
- It is also known as the preamplifier.
- It cancels out activity that is common to both electrodes, such as 60 Hz noise from lights or
electrical fixtures.
- Rejection helps eliminate activity from outside sources (such as noise from lights, movement,
or electrical fixtures)
- If the activity is identical or common in both electrodes, it will be eliminated
What is the importance of signal averaging when gathering data for the Auditory Brainstem
Response (ABR)? - CORRECT ANSWER - The purpose of signal averaging is to
eliminate the unrelated activity (background noise) and reveal the auditory evoked potential
(AEP). With Signal averaging, you are taking more than one signal (electrical potentials) at a
time and then averaging them (can take the signal thousands of times before averaging). The
more you run the test (N), the more accurate your results will be.
