ED SP 3700 Lecture Notes - Lecture 12: Otitis Media, Sign Language, Spoken Language
9 Nov 2017
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Learners who are deaf or hard of hearing. Physiological definition: deaf: inability to hear sounds below 90 db, hard of hearing. Educational definition effects ability to _speak_ and develop _language: deaf cannot process linguistic information __with________________ or. ___without_______________ a hearing aid: hard of hearing. Congenitally deaf those who are _born deaf. Adventitiously deaf those who acquire deafness sometime after birth. Prelingual deafness deafness at birth or early in life. _postlingual_ deafness deafness after the after the development of speech & language. Differences in __definition, populations studied, and _accuracy of testing. U. s. department of education statistics deaf or hard of hearing. 14_% of the population from 6 to 17 years of age. The outer ear: tympanic membrane (eardrum) The middle ear: malleus (_hammer), incus (_anvil_), and stapes (_stirrup_, oval window. The inner ear: vestibular mechanism, cochlea. Pure-tone audiometry: hearing at different _frequencies (hertz, audiometric zero. Tests for young and hard to test children: conditional play _audiometry, tympanometry, brain-stem evoked response audiometry.
