Praxis Audiology 5343 practice test Questions Correctly Answered
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Course
Audiology Praxis
Institution
Audiology Praxis
Which of the following factors most significantly influences the speed of sound propagation in human tissue?
A. Temperature
B. Frequency
C. Tissue Density
D. Humidity - Correct Answer Correct answer: C.
Explanation: The speed of sound in human tissue is primarily influenced by the densi...
Praxis Audiology 5343 practice test Questions
Correctly Answered
Which of the following factors most significantly influences the speed of sound propagation in human
tissue?
A. Temperature
B. Frequency
C. Tissue Density
D. Humidity - Correct Answer Correct answer: C.
Explanation: The speed of sound in human tissue is primarily influenced by the density of the tissue.
While temperature and humidity can affect sound propagation in air, in human tissue, the density is the
most significant factor.
In auditory signal processing, the phenomenon where a sound's perceived location is affected by the
frequency content is known as:
A. Dichotic listening
B. Precedence effect
C. Localization distortion
D. Head-related transfer function - Correct Answer Correct answer: D.
Explanation: The Head-related transfer function (HRTF) is a response that characterizes how an ear
receives a sound from a point in space, thus affecting the perceived location of the sound based on its
frequency content.
What principle underlies the use of otoacoustic emissions (OAEs) in audiological assessments?
A. Reflectance of sound in the ear canal
B. Hair cell regeneration
,C. Sound produced by the cochlea
D. Bone conduction efficiency - Correct Answer Correct answer: C.
Explanation: Otoacoustic emissions are sounds generated by the cochlea, specifically by the outer hair
cells, as part of the auditory system's normal functioning. These emissions are used to assess cochlear
health.
Which of the following best describes the primary role of the stapedius muscle in the auditory system?
A. Amplifying low-frequency sounds
B. Protecting the inner ear from loud sounds
C. Facilitating the transmission of sound to the cochlea
D. Regulating the pressure within the middle ear - Correct Answer Correct answer: B.
Explanation: The stapedius muscle's primary role is to protect the inner ear from potential damage due
to loud sounds by contracting and thus reducing the movement of the stapes bone.
The phenomenon where a bilateral hearing aid user perceives a single auditory image in the center of
the head, despite sound stimulation to both ears, is known as:
A. Binaural fusion
B. Summation effect
C. Central dominance
D. Lateralization - Correct Answer Correct answer: A.
Explanation: Binaural fusion refers to the process where a person wearing hearing aids in both ears
perceives a single, centered auditory image, resulting from the integration of auditory information from
both ears.
In audiology, which test is specifically designed to assess the function of the superior olivary complex in
the brainstem?
,A. Acoustic reflex thresholds
B. Pure-tone audiometry
C. Otoacoustic emissions testing
D. Auditory brainstem response (ABR) - Correct Answer Correct answer: A.
Explanation: Acoustic reflex threshold testing evaluates the function of the superior olivary complex in
the brainstem. This reflex involves the contraction of the middle ear muscles in response to loud sounds,
a process controlled by the superior olivary complex.
In the context of auditory neuropathy, which characteristic is typically observed in otoacoustic emissions
(OAEs) and auditory brainstem responses (ABRs)?
A. Absent OAEs and normal ABRs
B. Present OAEs and absent ABRs
C. Absent OAEs and absent ABRs
D. Present OAEs and normal ABRs - Correct Answer Correct answer: B.
Explanation: In auditory neuropathy, a typical finding is the presence of otoacoustic emissions (OAEs),
indicating normal outer hair cell function, alongside absent auditory brainstem responses (ABRs), which
suggest a dysfunction at the level of the auditory nerve or brainstem.
Which of the following best describes the primary function of the efferent auditory pathway?
A. Transmitting sounds from the cochlea to the brain
B. Regulating the sensitivity of the auditory system
C. Facilitating the transmission of sounds across the middle ear
D. Converting mechanical energy to electrical signals in the cochlea - Correct Answer Correct answer: B.
Explanation: The efferent auditory pathway primarily functions to regulate the sensitivity and dynamic
range of the auditory system, particularly by modulating the activity of the outer hair cells in the cochlea.
, In terms of auditory processing disorders, the difficulty in understanding speech in the presence of
background noise is referred to as:
A. Temporal processing deficit
B. Dichotic listening deficit
C. Auditory figure-ground dysfunction
D. Phonemic synthesis problem - Correct Answer Correct answer: C.
Explanation: Auditory figure-ground dysfunction is a specific type of auditory processing disorder where
an individual has difficulty understanding speech in the presence of background noise, struggling to
focus on the primary auditory signal.
The phenomenon where a person perceives a sound to be louder in one ear than in the other, despite
being presented at equal levels, is known as:
A. Binaural summation
B. Lateralization
C. Unilateral loudness recruitment
D. Interaural level difference - Correct Answer Correct answer: C.
Explanation: Unilateral loudness recruitment occurs when a sound is perceived to be louder in one ear
than in the other, despite being presented at equal levels. This typically occurs in conditions where one
ear has a significantly different hearing sensitivity compared to the other.
What is the primary auditory deficit associated with damage to the hair cells at the base of the cochlea?
A. Difficulty in hearing low-frequency sounds
B. Impaired speech discrimination
C. Enhanced sensitivity to loud sounds
D. Difficulty in hearing high-frequency sounds - Correct Answer Correct answer: D.
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