COGS 154 Lecture Notes - Lecture 14: Sensorineural Hearing Loss, Conductive Hearing Loss, Tuning Fork
19 Aug 2016
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Subspecialty of slp educator d/hh, or audiologist. Specialty of listening & spoken-language specialist: lsls, cert-avt, lsls cert-ed. Candidates for aud hab: congenital or pre-lingual hearing loss. Provide language through another modality (e. g. signed language) Primary goal: make signal louder & teach client compensatory strategies. Candidates for ar: acquired hearing loss. Hearing loss impacts communication --> aural rehab: amplification makes speech louder, client learns strategies to compensate for info still missing. How common is hearing loss: 2-3: 1,000 born with some degree of unilateral or bilateral hl in the us, 15% of 18+ adults report difficulty hearing. Basilar membrane: narrower & thicker at base (near oval window, wider & thinner at the apex. Vibrates with pressure in a traveling wave manner. In terms of: pitch, loudness, discrimination [i. e. how clear is what you hear] Types: conductive hearing loss: something blocks the ear canal or interrupts the bones of middle ear.
