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chapter 11
| Term | Definition |
|---|---|
| deaf and hard of hearing | |
| decibels | units of loudness of sounds |
| congenitally deaf | those who are born deaf |
| adventitiously deaf | those who acquire deafness at some time after birth |
| Prelingual deafness | refers to deafness that occurs at birth or early |
| Postlingual deafness | is deafness that occurs after development of speech and language. |
| tympanic membrane (eardrum) | he boundary between the outer and middle ears. |
| auricle | part of the ear that protrudes from the side of the head. The part that the outer ear plays in the transmission of sound is relatively minor. |
| ossicles | called the malleus (hammer) |
| incus (anvil). and stapes (stirrup), | which are contained within an air-filled space- conducts the vibrations of the eardrum along to the oval window. |
| vestibular mechanism | located in the upper portion of the inner ear, is responsible for the sense of balance. It's extremely sensitive to such things as acceleration, head movement, and head position. |
| cochlea | Far the most important organ for hearing. Lying below the vestibular mechanism. |
| Pure-tone audiometry | designed to establish the individual's threshold for hearing at a variety of different frequencies. |
| Frequency, | measured in hertz (Hz) units, has to do with the number of vibrations per unit of time of a sound wave; the pitch is higher with more vibra-tions, lower with fewer. |
| the zero hearing-threshold level, or audiometric zero. | the decibel scale is based on ratios, each increment of 10 dB is a 10-fold increase in intensity. |
| speech audiometry | to test a person's detection and understanding of speech. |
| The speech-reception threshold (SRT) | the decibel level at which one can understand speech. |
| conductive hearing impairment | refers to an interference with the transfer of sound along the conductive pathway of the middle or outer ear. |
| sensorineural hearing impairment | involves problems in the inner ear. |
| mixed hearing impairment | combination of the two. |
| external otitis | swimmer's ear |
| otitis media | an inflammation of the middle-ear space. The most common problem of the middle ear |
| connexin-26 gene | the most common cause of congenital deafness. |
| Congenital cytomegalovirus (CMV), | a herpes virus, is the most frequent nongenetic cause of deafness in infants |
| Lineuistic differentiation | the heart of Deaf culture; many within the Deaf community view themselves as bilingual, with individuals possessing varying degrees of fluency in ASL and English |
| Attitudinal deafness | refers to whether a person thinks of himself as deaf. It might not have anything to do with a persons hearing acuity. |
| Behavioral norms within the Deaf community | Differ from those in hearing society. |
| Historical awareness | significant people and events pertaining to people who are deaf permeates the Deaf community. They are often deferential to elders and value their wisdom and knowledge pertaining to Deaf traditions. |
| Voluntary organizational networks | abundant in the Deaf community. |
| in vitro fertilization, | a procedure that is used to help infertile couples, whereby egg cells from the mother are fertilized in the laboratory and then placed in the mother's uterus |
| oralism-manualism debate, | to represent two very different points of view: Oralism favors teaching people who are deaf to speak, whereas manualism advocates the use of some kind of manual communication. |
| bicultural-bilingual approach | which promotes ASL as a first language and supports instruction in the Deaf culture |
| auditory-verbal approach | focuses exclusively on using audition to improve speech and language development |
| auditory-oral approach | it also stresses the use of visual cues, such as speechread-ins and cued speech. Sometimes inappropriately called linreading, |
| speechreading | involves teaching children to use visual information to understand what is being said to them. |
| Cued speech | a way of augmenting speechreading. In cued speech, the individual uses handshapes to represent specific sounds while speaking. |
| homophenes | different sounds that are visually identical when spoken. |
| Total communication | involves the simultaneous use of speech with one of the signing English systems. |
| text telephones (TT), | referred to as TTYs (teletypes) or TDDs (telecommunication devices for the deaf). People can use a TT connected to a telephone to type a message to anyone else who has a TT. |
| video relay service (VRS). | VRS enables people who are deaf to communicate with people who hear through a sign language |
| Transliteration | which is similar to signed English, maintains the same word order as spoken English. ASL, by contrast, requires the interpreter to digest the meaning of what is said before conveying it through signs. |