Lecture 17 - Audiology 2

Lecture 17 - Audiology 2 - Audiological Testing and...

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Unformatted text preview: Audiological Testing and Audiological Testing and Hearing Loss Hearing Loss Overview Audiological testing procedures Referral and Case History Pure Tone Audiometry Speech Audiometry Immittance testing Electrophysiologic tests Hearing Loss Definitions Degrees of h. loss Speech banana Types of h. loss Conductive, sensorineural, mixed Central Auditory Processing Disorder Referral & Case History Searching for cause of disorder and clients needs Why has person come for an evaluation? Family history of hearing loss? Recent injury to head or ear? What medications are they taking? Exposure to noise? What symptoms is the person experiencing? Difficulty hearing in different situations Ringing in the ears Ear ache Dizziness Pure Tone Audiometry Audiometer Instrument used to measure hearing Pure tones are presented at selected frequencies Determine a hearing threshold Threshold: Quietest level at which a person hears the stimulus 50% of the time Air Conduction use headphones; Sound travels throughout the outter, middle and inner ear Bone Conduction bone oscillator on skull behind ear the bones of the skull vibrate and stimulate the fluids in the cochlea assesses cochlear function because it bypasses the outer and middle ear Audiogram Speech Audiometry Speech Reception Threshold (SRT) The quietest level of speech a person can hear 50% of the time stimuli: spondee words Two syllable, compound words Speech Discrimination also called word recognition score stimuli: one syllable words presented at a comfortable listening level calculate the percent of words correctly repeated Measures impact of hearing loss on a persons communication Immittance Testing Measures automatic responses of the auditory system Tympanometry...
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This note was uploaded on 06/10/2008 for the course HSLS 108 taught by Professor Mccarthy during the Spring '08 term at Ohio University- Athens.

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Lecture 17 - Audiology 2 - Audiological Testing and...

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