Term
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Definition
| The level of a sound at which an individual 50% of the time can hear it. |
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Term
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Definition
| A visual representation of a person’s threshold at a given frequency and intensity. |
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Term
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Definition
| Air Conduction, Bone Conduction, Speech Audiometry |
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Term
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Definition
Air conduction provides an assessment of the functional integrity of the outer, middle, and inner ears.
-X- Left Ear air conduction
-O- Right Ear air conduction |
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Term
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Definition
Bone conduction reflects the function of the cochlea, regardless of the status of the outer or middle ears.
-< Or > indicate BC scores |
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Term
| What is Speech Audiometry? |
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Definition
Speech Audiometry: Tells us how an auditory disorder might impact the communicative problems of daily living.
-Use Speech Audiometry to:
Measure threshold for speech
Cross-check pure-tone sensitivity
Quantify suprathreshold speech recognition ability
Estimate communicative function
-Speech Recognition Thresholds (SRT)
Ex: baseball, hotdog, airplane, toothbrush
- Speech Awareness Thresholds (SAT)
Ex: point to the baseball
- Word Recognition Scores (WRS)
Ex: “Say the word eyes. Say the word ear |
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Term
| What are Objective tests? |
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Definition
| Tympanometry, Acoustic Reflexes, Otoacoustic Emissions, and Electrophysiology |
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Term
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Definition
Tympanometry: it is a test used to detect disorders of the middle ear.
-Air pressure in the ear canal is varied to test the condition and mobility (movement) of the tympanic membrane (ear drum) |
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Term
| What is the Acoustic Reflexes test? |
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Definition
an involuntary muscle contraction that occurs in the middle ear of mammals in response to high-intensity sound stimuli.
-The acoustic reflex normally occurs only at relatively high intensities; activation for quieter sounds can indicate ear dysfunction and absence of acoustic reflex can indicate neural hearing loss. |
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Term
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Definition
| -Otoacoustic Emissions: measures an acoustic response that is produced by the inner ear (cochlea), which in essence bounces back out of the ear in response to a sound stimulus. |
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Term
| What are the 3 types of hearing loss? |
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Definition
Conductive- problems with outer/middle ear
-Sensorineural- problems with the cochlea
-Retrocochlear - problems beyond the cochlea ~ including the auditory nerve, and the CANS |
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Term
| What is normal hearing for children, adults, and adults over 65 in dB HL? |
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Definition
-Adults: 0-25 dB HL
-Children 0-15 dB HL
-Adults over 65 yrs- 40 dB HL |
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