Masking
The energy lost as sound travels trans-cranially from one ear to the other.
Interaural Attenuation
Masking is needed in air conduction when there is a _____________ dB or more difference between the air conduction threshold of the TEST EAR and the bone conduction threshold of the SAME EAR.
15 dB
This form of acoustic immitance or impedance testing evaluates the compliance of the tympanic membrane.
Static / Acoustic compliance
Low compliance, scarring, fluid, ossicular chain fixations would present with what type of peak on tympanography?
Type As (A shallow)
______ consists of use of multiple loud speakers positioned off sides of the pediatric patient. Visual stimuli is paired with a sound resulting in patient turning toward trained sound to determine pure tone or SDT/SRT values.
Sound field audiometry
The most efficient kind of masking noise for pure-tone testing is _____________ .
Narrow-band noise
Interaural attenuation for Bone Conduction is theoretically ______________ dB.
0 dB
The three objective measures of the audiological system are:
Acoustic Immitance
Otoacoustic Emissions
Auditory Evoke Potentials
Type Ad peak demonstrates a peak that is _________ and would be seen due to _________________.
overly mobile/over 1.5 compliance
Disarticulation of the ossicular chain
healing over of perforation
______ tests outer hair cells in the cochlea.
OAEs (Otoacoustic emissions)
Contralateral can be defined as _____________ side of the body.
Opposite
The reason for masking is to rule out the influence from the ____________ in the evaluation of hearing.
NTE - non-test ear
An involuntary mucles contraction involving the movement of the malleus, incus, and stapes along with the tympanic membrane is known as the ___________ ____________.
Acoustic reflex
When a peak is borderline normal but aligns past -50/+50 pressure on the tymp, what type of scale is seen and what causes this?
Type C
Eustachian tube disfunction or upper respiratory infection
Ling Six Sound Test
The interaural attenuation value for supra-aural headphones is _____________ dB.
40 dB
When sound is presented through bone conduction on the RIGHT mastoid, which cochlea receive the stimulus?
Right and left
Static compliance, tympanometry, and acoustic reflex are all what types of tests?
Acoustic immittance
In a Type B tympanogram, a flat line with no identifiable peak represents normal ear canal volume and _________ in the middle ear.
fluid
________ is when a tone is presented to a child and the demonstrates acknowledgement of the sound by completing a task such as stacking a ring.
Play audiometry
The Interaural Attenuation value for inserts is about _____________ dB or more difference between the air conduction threshold of the test ear and the bone conduction threshold of the non-test ear.
70 dB
When the narrow-band noise presented for masking is more than allows for determining the true threshold it is known as ___________________ .
Over-masking
This muscle is responsible for the protection of the inner ear against hearing damage by noise and moving the stapes and adjusting the perilymph fluid accessed through the oval window.
stapedius
In a Type B-High tympanogram where there is no identifiable peak and the compliance is high, this suggests an ___________ in the tympanic membrane.
opening / perforation of TM
Because OAEs reflect outer hair cell function, an infant could pass a newborn hearing screen and still have _____________
retro-cochlear hearing loss