SHS 311 Questions with 100% Correct Answers
the cochlear microphonic has the same () as the input sound waveform
frequency
most afferent auditory nerve fibers innervate the
inner hair cells
during the depolarization phase of an action potential, which channel opens?
NA+ channel
what is spontaneous response
neural response in the absence of sound
which is not a feature of the neural tuning curve
compressive nonlinearity
what is an auditory nerve fiber's characteristic frequency?
the frequency at the trough of the tuning curve
in the PST histogram, which response rate is the highest?
onset response
neurons fire/do not fire at a particular phase of stimulus but the may/may not fire in
each stimulus cycle
fire/may not
if an ISI histogram has peaks at 4, 8, 12, and 16 msec, what is the likely frequency of the
sound?
, 250 Hz
what is the limitation of rate code of intensity?
limited dynamic range
which frequency is unlikely to produce auditory nerve responses that follow the
temporal pattern of sound waveform
10000 Hz
where is auditory cortex located?
temporal lobe
what does fMRI directly measure?
oxygenated blood flows
which part of the superior olivary complex is used to process the ITD cues?
medial superior olive
lateral inhibitory network is used to process?
spectral contrast
How is an action potential generated?
-when the input stimulus is higher than the threshold, the sodium channels open and move
into the cell, increasing the potential (depolarization), when the potential increases to a
certain level, the sodium channel closes and the potassium channels open, potassium moving
out of the cells which decreases potential (repolarization) until potential is lower than resting
potential. both sodium and potassium channels will close, sodium potassium pump then starts
to work to redistribute until potential is back to resting potential (refractory period). Cell can
the cochlear microphonic has the same () as the input sound waveform
frequency
most afferent auditory nerve fibers innervate the
inner hair cells
during the depolarization phase of an action potential, which channel opens?
NA+ channel
what is spontaneous response
neural response in the absence of sound
which is not a feature of the neural tuning curve
compressive nonlinearity
what is an auditory nerve fiber's characteristic frequency?
the frequency at the trough of the tuning curve
in the PST histogram, which response rate is the highest?
onset response
neurons fire/do not fire at a particular phase of stimulus but the may/may not fire in
each stimulus cycle
fire/may not
if an ISI histogram has peaks at 4, 8, 12, and 16 msec, what is the likely frequency of the
sound?
, 250 Hz
what is the limitation of rate code of intensity?
limited dynamic range
which frequency is unlikely to produce auditory nerve responses that follow the
temporal pattern of sound waveform
10000 Hz
where is auditory cortex located?
temporal lobe
what does fMRI directly measure?
oxygenated blood flows
which part of the superior olivary complex is used to process the ITD cues?
medial superior olive
lateral inhibitory network is used to process?
spectral contrast
How is an action potential generated?
-when the input stimulus is higher than the threshold, the sodium channels open and move
into the cell, increasing the potential (depolarization), when the potential increases to a
certain level, the sodium channel closes and the potassium channels open, potassium moving
out of the cells which decreases potential (repolarization) until potential is lower than resting
potential. both sodium and potassium channels will close, sodium potassium pump then starts
to work to redistribute until potential is back to resting potential (refractory period). Cell can
