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Audiology Praxis Questions with Revised Answers All Correct

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Audiology Praxis Questions with Revised Answers All Correct What are the functions of the vestibular system? - Answer-1. integrates sensation in the brain stem 2. awareness of one's body position in relation to gravity 3. maintains posture and equilibrium. What are the four types of nys...

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  • September 13, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • audiology praxis
  • audiology praxis questions with revised answers
  • what are the functions of the vestibular system

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Audiology Praxis Questions with
Revised Answers All Correct
What are the functions of the vestibular system? - Answer-1. integrates sensation in the
brain stem
2. awareness of one's body position in relation to gravity
3. maintains posture and equilibrium.

What are the four types of nystagmus? - Answer-1. spontaneous
2. positional
3. gaze
4. congenital

How are the receptors in the utricle and saccule oriented? - Answer-Urticule are
horizontal and sensitive to linear head movements. Saccule are vertical and sensitive to
vertical movement and vibration.

Describe how SCC respond to head movement. - Answer-Canals respond maximally to
plane stimulation in which they are oriented. Both canals are stimulated. On canal is
hypo-polarized (inhibited) and the other is depolarized (facilitated). The brainstem
integrates the information from the two sides together.

What is the vestibular occular reflex (VOR)? - Answer-head movement in one direction
results in eye movement in the opposite direction.

Describe the four types of nystagmus. - Answer-1.spontaneous: occurs without
vestibular or visual stimulus and does not suppress with visual fixation.
2. positional: occurs with following changes in head position.
3. gaze: occurs following a shift in gaze.
4. congenital: may be seen in young people. A slight nystagmus that doesn't interfere
with daily functioning. Might be genetic.

List the common vestibular disorders and their length of nystagmus. - Answer-seconds
= BPPV
minutes = veterbrobasilar insufficiency
hours = Meniere's
days/weeks = vestibular neuritis and labrynthitis

List the interpeak latencies for an ABR - Answer-I-III 2 msec apart
III-V 2 msec apart
I-V 4 msec apart

, List the conditions that must occur during a Dix-Halpike test in which BPPV would be
positive - Answer-1. delayed onset: 10 seconds after reposition, nystagmus occurs.
Maximum severity occurs at 20-30 seconds and minimizes after 40-60 seconds
2. burst of activity: a sudden onset of nystagmus occurs
3. subjective vertigo: nausea and vomiting
4. fatigable: once the patient returns to upright position, nsytagmus diminishes

What is the ANSI standard for specification for audiometers? - Answer-ANSI S3.6-1996
(revised from 1989 standard).

How are audiometers classified? - Answer-By Type 1, 2, 3, 4,,5 and HF and speech A,
B, and C. The smaller the number, the more features the audiometer has.

List the 5 types of audiometer classifications - Answer-1. Pure tone audiometer
2. Automatic audiometer
3. Speech audiometer
4. Extended High-frequency audiometer
5. Free field equivalent audiometer

List the 5 types of transducers - Answer-1. Supra-Aural earphones
2.Insert earphones
3. Circumaural earphones
4. loudspeakers
5. bone vibrators

What are the most common supra-aural earphones used in audiology clinics? (Make
and model) - Answer-Telephonics TDH 49 and 50

What are the most common insert earphones used in audiology clinics? - Answer-
Etymotic Research (ER) 3A and E-A-RTONE 3A

What are the most common circumaural earphones used in audiology clinics? When are
circumaural earphones used? - Answer-Sennheiser HDA 200; high frequency threshold
testing above 8000 Hz.

What is the difference between the B-71 and B-72 bone vibrator? - Answer-B-71 is
smaller (20g) then the B-72 (48g) and is more commonly used in clinics.

What coupler is used to calibrate supra-aural earphones? - Answer-NBS 9-A or IEC 318
coupler

What coupler is used to calibrate insert earphones - Answer-HA-1, HA-2, of occluded
ear simulator couplers

Describe the transducer function of earphones, bone vibrators, and loudspeakers. -
Answer-Inserts, supra-aural, circumaural earphones and loudspeakers convert electrical

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