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24 Cards in this Set
- Front
- Back
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ASL |
American Sign Language ● Native language of the deaf in the U.S. ● advantages: visual ● disadvantages: not English |
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SEE |
Signing Exact English
● system to help ASL users learn to read English
● advantages: gestural system to help learn reading ● disadvantages: very complex & diff to learn |
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TC |
Total Communication ● speaking, gesturing, and pantomiming ● used primarily in initial language teaching with hearing impaired Kids as well as those w/ cognitively impaired kids |
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Behind-the-Ear Hearing Aid |
● largest ear-level instrument ● curved, sits on top of external ear ● Most flexible aid - appropriate for any degree of HL - can be equipped with more circuitry |
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Open-Fit BTE |
● does not use custom ear mold like regular BTE |
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In-the-Ear (ITE) |
● custom fit ● placed directly into ear, filling entire Concha ● NOT good for most severe HL |
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In-the-Canal |
● fits in external ear canal & fills only a small portion of Concha ↳ allows for natural resonances & diffraction effects of the external ear
● Best for mild → moderate, and some severe HL |
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Completely-in-the -Canal (CIC) |
● Smallest custom fit hearing aid ● fits deep in canal ● Volume wheels & Controls often not available due to size ● Best for mild → moderate HL |
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Body / Eyeglass Aids |
● rarely used ● Body aids : provide powerful amp. good for severe → profound HL ● Eyeglass aids : usually heavy & uncomfortable |
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Circuitry Types |
1. Analog
2. Digitally Programmable
3. Digital Signal |
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Analog Circuitry |
● acoustic signal → electrical signal → acoustic → deliver to external ear canal.
● signal can be shaped so that more amplification is provided in frequency range w/the most HL |
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Digitally Programmable |
● acoustic parameters adjusted using a comp or handheld remotes |
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Digital Signal |
● acoustic signal → electrical signal → numerical code manipulated to acheive desired target → converted back to acoustic signal → sent to external ear canal
● easier, more efficient way to manipulate acoustic signal ↳ clearer, better quality & more specific amplified sound |
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Bone Conduction Aids |
● Vibrator held in place by headband against mastoid bone ● if no external canal or when middle ear disorder ● can lead to soreness / headaches; often falls out place |
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Bone-Anchored (BAHA) |
● surgically attached to skull ● works just like bone conduction but without uncomfortable headband ● for max conductive loss |
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Vibrotactile Aid |
● Not a hearing aid. ● Vibrator placed on sternum to send info about acoustic environment via sense of touch ● for those who do not benefit from conventional hearing aids |
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Middle Ear Implants |
● surgically placed in middle ear space
● for those with sensorineural loss & those with residual hearing
● No external ear mold ↳ no cerumen impaction & no feedback |
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Cochlear lmplants |
● Surgically implanted
● stimulates auditory nerve electronically to provide sound/ speech info
● some pt receive detection of environmental sounds, some get improved speech reading abilities
● for pt with little → no residual hearing |
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Auditory Brainstem Implants (ABI) |
● implant placed on cochlear nucleus of brainstem during surgery to tumors on bilateral VIII nerve ● for pt w/out functional auditory nerves |
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ALD: Hardwired Devices |
● mic connected to amp via wire → sends signal to receiver worn by pt. in pocket or carried by hand ● good for one -on- one conversations disadvantages : size & connecting wires |
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ALD: FM System |
● Picks up Voice through wireless Fm mic 3-4" away from speaker's mouth
● signal amplified→turned back to acoustic signal → sent to ear worn receiver |
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ALD: Sound field FM system |
● loud speakers used to transmit voice to everyone in the vicinity ● Advantages: little → no electrical interference & ease of use ● Disadvantage: Susceptible to FM interference |
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Readiness Activities |
● explore child's prior Knowledge ● define the vocab to be used ● summarize main ideas BEFORE going into detail |
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Voice symptoms exhibited by deaf children |
● monotone ● hypernasal ● high pitch |
