CNIM – BAEPs Exam Worksheet with all Correct & 100%
Verified Answers |Actual Complete Exam |Already
Graded A+
The electrocochleogram (ECochG) is comprised of all of the following except:
-Auditory nerve compound action potential
-Summating potential
-Brainstem auditory evoked potential
-Cochlear microphonic ✔Correct Answer-Brainstem auditory evoked potential
Cochlear microphonics are monitored intraoperatively to obtain information about the:
-end organ hair cells
-vestibular nerve
-Brainstem
-auditory nerve ✔Correct Answer-end organ hair cells
In the above image, what is the montage used to record the ECochG in the first channel?
Cz-A1
A1-A2
A1-EAM1
A1-Cz ✔Correct Answer-A1-EAM1
In recording electrocochleargrams, it is best to stimulate using:
Tone pips
Alternating clicks
Tone bursts
Rarefaction and condensation clicks ✔Correct Answer-Rarefaction and condensation clicks
Which of the following potentials will reverse with click polarity?
Summating potential
Wave V
CAP (cochlear action potential)
Cochlear microphonic ✔Correct Answer-Cochlear microphonic
How do you differentiate Wave 1 from cochlear microphonics in Ecoch?
Reverse the polarity
Alternating polarity
Rarefaction polarity
Decrease the stimulation intensity ✔Correct Answer-Reverse the polarity
In BAEPs, wave I can most easily be differentiated from cochlear microphonics based upon:
Amplitude
,Morphology
Absence in contralateral recording
Click polarity ✔Correct Answer-Click polarity
Sound is transmitted in normal ears from the tympanic membrane to the cochlea via the:
Superior olives
Eighth cranial nerve
Auditory ossicles
Semicircular canals ✔Correct Answer-Eighth cranial nerve
Which modality has mixed near-field and far-field potentials?
-Electrocochleogram (ECochG)
-Cortical stimulation
-FN monitoring
-Electrocorticography (EEG recording from the cortex)
-BEAR ✔Correct Answer--BEAR
The vestibulocochlear nerve enters the brainstem at which of the following levels?
Lower medulla
Pons/Midbrain
Pons/Medulla
Midbrain ✔Correct Answer-Pons/Medulla
The vestibulocochlear nerve (CN VIII) appears:
-between the cerebellum and C3
-at the base of the brain near the optic nerves
-from the floor of the third ventricle
-in the groove between the pons and medulla oblongata ✔Correct Answer-in the groove
between the pons and medulla oblongata
The first component of the brainstem auditory evoked potential arises from _______ .
Brainstem
Thalamus
Auditory nerve
Cochlea ✔Correct Answer-Auditory nerve
Regarding wave I of the BAER, the proposed generator is:
Cortex
Inferior colliculi
Superior olives
Auditory cranial nerve ✔Correct Answer-Auditory cranial nerve
Regarding wave III of the BAER, the proposed generator is:
Superior olives
, Inferior colliculi
cortex
Auditory cranial nerve ✔Correct Answer-Superior olives
Regarding wave V of the BAER, the proposed generator is:
Temporal Cortex
Superior olives
Eighth cranial nerve
Inferior colliculi ✔Correct Answer-Inferior colliculi
The BAEP measurement of the III-V interpeak interval represents:
-an important tool in assessing cochlear ischemia
-the conduction of the stimulus through the acoustic nerve
-conduction through the upper brainstem
-the time it takes for the sound to travel to the auditory cortex ✔Correct Answer-conduction
through the upper brainstem
Which of the following waves from the BAER can be absent or fused with another wave and still
be a normal variant?
II and IV
I and III
I and V
III-V ✔Correct Answer-II and IV
Which of the following waveforms of the BAER can be absent in normal subjects?
II
I
III
V ✔Correct Answer-II
Primary waveforms for analysis are _____.
I, II, IV, V
I, III, V
I, V
III, V ✔Correct Answer-I, III, V
Sensation Level (SL) is defined by:
-The absolute sound pressure relative to atmospheric pressure
-An individual's hearing threshold
-The average hearing threshold of a normal population
-A measure of the ambient pressure ✔Correct Answer-An individual's hearing threshold
Hearing Level (HL) is defined by:
-An individual's hearing threshold
Verified Answers |Actual Complete Exam |Already
Graded A+
The electrocochleogram (ECochG) is comprised of all of the following except:
-Auditory nerve compound action potential
-Summating potential
-Brainstem auditory evoked potential
-Cochlear microphonic ✔Correct Answer-Brainstem auditory evoked potential
Cochlear microphonics are monitored intraoperatively to obtain information about the:
-end organ hair cells
-vestibular nerve
-Brainstem
-auditory nerve ✔Correct Answer-end organ hair cells
In the above image, what is the montage used to record the ECochG in the first channel?
Cz-A1
A1-A2
A1-EAM1
A1-Cz ✔Correct Answer-A1-EAM1
In recording electrocochleargrams, it is best to stimulate using:
Tone pips
Alternating clicks
Tone bursts
Rarefaction and condensation clicks ✔Correct Answer-Rarefaction and condensation clicks
Which of the following potentials will reverse with click polarity?
Summating potential
Wave V
CAP (cochlear action potential)
Cochlear microphonic ✔Correct Answer-Cochlear microphonic
How do you differentiate Wave 1 from cochlear microphonics in Ecoch?
Reverse the polarity
Alternating polarity
Rarefaction polarity
Decrease the stimulation intensity ✔Correct Answer-Reverse the polarity
In BAEPs, wave I can most easily be differentiated from cochlear microphonics based upon:
Amplitude
,Morphology
Absence in contralateral recording
Click polarity ✔Correct Answer-Click polarity
Sound is transmitted in normal ears from the tympanic membrane to the cochlea via the:
Superior olives
Eighth cranial nerve
Auditory ossicles
Semicircular canals ✔Correct Answer-Eighth cranial nerve
Which modality has mixed near-field and far-field potentials?
-Electrocochleogram (ECochG)
-Cortical stimulation
-FN monitoring
-Electrocorticography (EEG recording from the cortex)
-BEAR ✔Correct Answer--BEAR
The vestibulocochlear nerve enters the brainstem at which of the following levels?
Lower medulla
Pons/Midbrain
Pons/Medulla
Midbrain ✔Correct Answer-Pons/Medulla
The vestibulocochlear nerve (CN VIII) appears:
-between the cerebellum and C3
-at the base of the brain near the optic nerves
-from the floor of the third ventricle
-in the groove between the pons and medulla oblongata ✔Correct Answer-in the groove
between the pons and medulla oblongata
The first component of the brainstem auditory evoked potential arises from _______ .
Brainstem
Thalamus
Auditory nerve
Cochlea ✔Correct Answer-Auditory nerve
Regarding wave I of the BAER, the proposed generator is:
Cortex
Inferior colliculi
Superior olives
Auditory cranial nerve ✔Correct Answer-Auditory cranial nerve
Regarding wave III of the BAER, the proposed generator is:
Superior olives
, Inferior colliculi
cortex
Auditory cranial nerve ✔Correct Answer-Superior olives
Regarding wave V of the BAER, the proposed generator is:
Temporal Cortex
Superior olives
Eighth cranial nerve
Inferior colliculi ✔Correct Answer-Inferior colliculi
The BAEP measurement of the III-V interpeak interval represents:
-an important tool in assessing cochlear ischemia
-the conduction of the stimulus through the acoustic nerve
-conduction through the upper brainstem
-the time it takes for the sound to travel to the auditory cortex ✔Correct Answer-conduction
through the upper brainstem
Which of the following waves from the BAER can be absent or fused with another wave and still
be a normal variant?
II and IV
I and III
I and V
III-V ✔Correct Answer-II and IV
Which of the following waveforms of the BAER can be absent in normal subjects?
II
I
III
V ✔Correct Answer-II
Primary waveforms for analysis are _____.
I, II, IV, V
I, III, V
I, V
III, V ✔Correct Answer-I, III, V
Sensation Level (SL) is defined by:
-The absolute sound pressure relative to atmospheric pressure
-An individual's hearing threshold
-The average hearing threshold of a normal population
-A measure of the ambient pressure ✔Correct Answer-An individual's hearing threshold
Hearing Level (HL) is defined by:
-An individual's hearing threshold
