ECochG
The major contribution to cochlear microphonic (CM) arises from
What are the hair cells in the basal region of the cochlea
The expected time delay between Waves I and V
What is 4 ms?
ASSR testing measures this frequency from the neural response
What is the modulating frequency?
Placement of the reference electrode on the nape of the neck enhances the amplitude of this ABR wave.
What is Wave V?
The Quivering Mouse shows these results on the ABR
What is no waves above Wave I
The auditory evoked potentials which follows the microstructure of the acoustic stimulus
What is the cochlear micophonic?
This type of hearing loss results in equal latency delays across intensity levels
What is a conductive hearing loss?
An 80-Hz modulation rate would measure neural responses from this part of the auditory system
This polarity is used when performing bone-conduction ABRs.
What is alternating polarity?
Children with poor reading skills show these effects on the FFR
Delayed latencies
The electrode that is placed on the surface of of the tympanic membrane
What is the tymptrode?
Interaural latency differences should not exceed this time difference
What is 0.2-0.3 ms?
The ASSR uses this type of modification to prevent the neural system from adapting?
What is amplitude or frequency modulation of the stimulus?
This tone-burst frequency usually has the largest correction value.
What is 500 Hz?
Aging has these effects on the FFR
What is reduced amplitudes and phase locking?
The choice of polarity when measuring the summating potential?
What are both rarefaction and condensation polarities?
This montage results in greater separation of Waves IV and V
What is vertical contralateral?
This statistic is used to to determine if power of response at the rate of stimulation > than EEG noise at surrounding frequencies
What is the F statistic?
The reduction of intensity has this result on ABR latencies.
What is a prolongation in latency?
This FFR assessment measure can be used to measure the brainstem's ability to follow changes in prosody.
What is pitch tracking?
An OTOF mutation has this effect in children with ANSD
Absence of otoferlin/Abolished calcium-triggered exocytosis
Hydrocephalus may result in this kind of ABR pattern
What is a prolongation in latency between Waves IV and V?
This modulation rate produces the most robust response in awake adults.
What is 40 Hz?
You can determine that no response is present with flat waveforms and this residual noise level
What is less than or equal to 25 nV?
The FFR is not suitable for infant threshold testing for these reasons
What is it's poorer sensitivity for high frequencies and detectability only at suprathreshold levels?