Audiology
Which 3 frequencies are included in the pure tone average?
500,1000,2000
Extended frequency detection is in the 8-16 kHz range
Describe the difference between detection and speech perception and what does that look like in the booth?
Detection is hearing something, speech perception is understanding what you heard.
Name some etiologys of hearing loss
medical, biological, genetic or environmental factors
What area of the skull is a BAHA placed?
Mastoid bone.
This process is called osseointegration. Where a small titanium implant of a bone anchored hearing aid adheres to the surrounding tissue in the mastoid bone
How many children out of 1,000 are born with hearing loss?
2-3
What is a procedure used by an audiologist to ensure that the non test ear does not participate or interfere with audiometric testing?
masking
What is aided speech perception and why is it important?
perception task with amplification. This is a representation of what they are hearing in the real world.
How would you test hearing on a kid that had bilateral atresia?
bone conduction
What is the sense organ in the cochlea that converts the wave of a specific frequency to a neural impulse?
Organ of Corti
What does congenital hearing loss mean?
hearing loss present at birth
acquired hearing loss develops after the development of spoken language
objective, noninvasive test of outer hair cell integrity that presents a stimuli into the ear canal and travels through the middle to inner ear to which sensory cells emit a response and it travels in the reverse direction and is measured in the ear canal
What is the threshold of intelligibility of speech; the lowest intensity at which at least 50% of spondees can be identified correctly
Speech recognition Threshold (SRT)
What could it be? WHen a kid presents as a mild to moderate sensorineural hearing loss with speech recognition difficulties disproportionate to the degree of loss
Auditory Neuropathy Spectrum Disorder
How are frequencies arranged on the cochlea?
High frequencies at the base and low frequencies at the apex
(tonotopic arrangement)
What is the most common cause of congenital sensorineural hearing loss?
Connexin 26
Formants occur at roughly how many Hz intervals?
1,000
What are examples of suprasegmentals?
rate, intensity, duration, pitch and prosody
What is tympanometry? What does a straight line mean? a large peak?
Measurement of the pressure compliance function of the tympanic membrane. Flat= fluid. Large peak = perforation or tubes.
Malleus, incus and stapes are called the.....
ossicular chain
What's the one-three-six rule?
screened by 1 month, full diagnosis by 3 months and intervention by 6 months of age.
What are the 4 levels of auditory hierarchy?
Detection, Discrimination, identification, comprehension
What is auditory figure ground?
The ability to attend to an auditory message in the presence of background noise
Which formants are essential for recognizing which vowel was spoken?
F1 and F2. The two energy peaks int he spectrum of a vowel.
Hearing prothesis for patients who do not have a functioning auditory nerve
auditory brainstem implant
What percentage of children who are deaf are born to hearing parents?
90%
Men are twice as likely to have hearing loss