SPHHRNG 2230 Lecture Notes - Lecture 5: Audiogram, Hearing Aid, Audiology
4 Sep 2016
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Document Summary
To identify hearing loss: screening= normal vs. abnormal, diagnostic = determining the problem. To diagnose hearing loss as conductive sensory-neural, or mixed. To determine severity of the loss: appropriate treatment. Tells us the sound is not being conducted to the cochlea at the appropriate proximity. Damage to outer and middle ears system. Often medically correctable or temporary (physician or medical treatment) Results in a loss of loudness, but with retention of speech understanding. Middle ear infection, putting in ear plugs (reducing the amount of sound going to the cochlea) Damage to cochlea or central auditory nervous system. Usually the result of damage in the cochlea. High frequencies usually go before the lows. Results in no loss of loudness, but a loss of speech understanding. I can hear what they are saying but it sounds like they are mumbling . Air conduction and bone conduction threshold will be elevated and equal.
