SHS 311
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With Elaborated 100%
Correct Complete Solutions
Guaranteed Pass First Attempt!! Current Update!!
1. The cochlear microphonic has the same _____ as the input sound
waveform? - CORRECT ANSWER Frequency
2. During the repolarization phase of the action potential, which channel
opens? - CORRECT ANSWER K +
3. What do the auditory nerve fibers innervate? - CORRECT ANSWER outer
hair cells
4. What is spontaneous activity? - CORRECT ANSWER Neural responses in the
absence of sound/stimulation
5. 4 phases of action potential - CORRECT ANSWER 1. resting state
(maintained by sodium potassium pump)
2. depolarization (Na+ flows into cell)
3. repolarization (K flows out of cell)
4. hyperpolarization (extra K+ flows out of cell
,6. Inside of the cell has greater concentration of ____ and the outside has
greater concentration of ____. - CORRECT ANSWER K+, Na+
7. Refractory period of a neuron - CORRECT ANSWER After the action potential
is generated, the Na+ pump closes, and the neuron is trying to go back to its
resting state (very quick)
channels are inactive
8. What nerves make up the 8th cranial nerve? - CORRECT ANSWER auditory
nerve- vestibularcochlear nerve
9. 4 cochlear potentials - CORRECT ANSWER 1. resting potential
2. summating potential
3. cochlear microphonic
4. compound auditory action potential
10.what is a synapse? - CORRECT ANSWER connection between neurons that
allows for the transfer of neurotransmitters to be transferred across
neurons
11.Resting potential - CORRECT ANSWER Direct current potential, appears in
absence of acoustic stimulation
12.Summating potential - CORRECT ANSWER Direction current potential,
occurs when stimulated by cochlea
,13.Cochlear microphonic - CORRECT ANSWER Alternating current potential,
appears when stimulated by cochlea
14.Compound auditory action potential - CORRECT ANSWER Alternating
current potential, generated by nerves rather than by the cochlea
15.Afferent sytem - CORRECT ANSWER Sensory, from hair cells to central
auditory system
16.Efferent system - CORRECT ANSWER Motor, from central auditory system to
hair cells
17.Type 1 of afferent auditory nerve - CORRECT ANSWER in the inner hair cells
18.Type 2 of afferent auditory nerve - CORRECT ANSWER in the outer hair cells
19.Peripheral auditory codes - CORRECT ANSWER 1. rate codes
2. synchrony codes
3. place codes
20.Rate codes - CORRECT ANSWER As sound intensity increases, the rate at
which neurons are fired increases. Therefore, the higher the sound
intensity, the more neurons are being fired.
, 21.Rate code limitation - CORRECT ANSWER Dynamic range problem. The firing
rate of a nerve fiber is limited to 30-50 db. Therefore, the 140 db range of
hearing cannot be explained.
22.Synchrony code - CORRECT ANSWER When temporal pattern of discharges
change, the stimulus also changes. Thus, the synchrony code can indicate
the temporal pattern of sound pressure waveforms
23.Synchrony code limitation - CORRECT ANSWER can only follow the stimulus
for frequencies up to 5000 Hz, so there is no frequency code above this
(due to neural limits such as refractory period)
24.Place code - CORRECT ANSWER the identity of a neuron can change when
the stimulus changes
25.place code limitation - CORRECT ANSWER when two different frequencies
are presented together, it is difficult to differentiate the frequencies
26.Objective psychophysics - CORRECT ANSWER Detection, discrimination, and
recognition
27.Goal of objective psychophysics - CORRECT ANSWER Measure of what a
listener can respond to
28.Subjective psychophysics - CORRECT ANSWER sensory scaling and matching
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With Elaborated 100%
Correct Complete Solutions
Guaranteed Pass First Attempt!! Current Update!!
1. The cochlear microphonic has the same _____ as the input sound
waveform? - CORRECT ANSWER Frequency
2. During the repolarization phase of the action potential, which channel
opens? - CORRECT ANSWER K +
3. What do the auditory nerve fibers innervate? - CORRECT ANSWER outer
hair cells
4. What is spontaneous activity? - CORRECT ANSWER Neural responses in the
absence of sound/stimulation
5. 4 phases of action potential - CORRECT ANSWER 1. resting state
(maintained by sodium potassium pump)
2. depolarization (Na+ flows into cell)
3. repolarization (K flows out of cell)
4. hyperpolarization (extra K+ flows out of cell
,6. Inside of the cell has greater concentration of ____ and the outside has
greater concentration of ____. - CORRECT ANSWER K+, Na+
7. Refractory period of a neuron - CORRECT ANSWER After the action potential
is generated, the Na+ pump closes, and the neuron is trying to go back to its
resting state (very quick)
channels are inactive
8. What nerves make up the 8th cranial nerve? - CORRECT ANSWER auditory
nerve- vestibularcochlear nerve
9. 4 cochlear potentials - CORRECT ANSWER 1. resting potential
2. summating potential
3. cochlear microphonic
4. compound auditory action potential
10.what is a synapse? - CORRECT ANSWER connection between neurons that
allows for the transfer of neurotransmitters to be transferred across
neurons
11.Resting potential - CORRECT ANSWER Direct current potential, appears in
absence of acoustic stimulation
12.Summating potential - CORRECT ANSWER Direction current potential,
occurs when stimulated by cochlea
,13.Cochlear microphonic - CORRECT ANSWER Alternating current potential,
appears when stimulated by cochlea
14.Compound auditory action potential - CORRECT ANSWER Alternating
current potential, generated by nerves rather than by the cochlea
15.Afferent sytem - CORRECT ANSWER Sensory, from hair cells to central
auditory system
16.Efferent system - CORRECT ANSWER Motor, from central auditory system to
hair cells
17.Type 1 of afferent auditory nerve - CORRECT ANSWER in the inner hair cells
18.Type 2 of afferent auditory nerve - CORRECT ANSWER in the outer hair cells
19.Peripheral auditory codes - CORRECT ANSWER 1. rate codes
2. synchrony codes
3. place codes
20.Rate codes - CORRECT ANSWER As sound intensity increases, the rate at
which neurons are fired increases. Therefore, the higher the sound
intensity, the more neurons are being fired.
, 21.Rate code limitation - CORRECT ANSWER Dynamic range problem. The firing
rate of a nerve fiber is limited to 30-50 db. Therefore, the 140 db range of
hearing cannot be explained.
22.Synchrony code - CORRECT ANSWER When temporal pattern of discharges
change, the stimulus also changes. Thus, the synchrony code can indicate
the temporal pattern of sound pressure waveforms
23.Synchrony code limitation - CORRECT ANSWER can only follow the stimulus
for frequencies up to 5000 Hz, so there is no frequency code above this
(due to neural limits such as refractory period)
24.Place code - CORRECT ANSWER the identity of a neuron can change when
the stimulus changes
25.place code limitation - CORRECT ANSWER when two different frequencies
are presented together, it is difficult to differentiate the frequencies
26.Objective psychophysics - CORRECT ANSWER Detection, discrimination, and
recognition
27.Goal of objective psychophysics - CORRECT ANSWER Measure of what a
listener can respond to
28.Subjective psychophysics - CORRECT ANSWER sensory scaling and matching
