Review 2 for Exam 1

Review 2 for Exam 1 - Review 2 for Exam 1 Sensorineural...

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Review 2 for Exam 1 19:26 Sensorineural Hearing Loss Most Common Causes Acoustic trauma Noise exposure Presbycusis  most commonly hair cell damage for sensorineural -Loss of frequency selectivity (hear out individual frequencies) -Loudness recruitment (Loudness changes much more dramatically) -Threshold for hearing sounds is elevated Hearing Aids for sensorineural: -amplify certain frequencies and leave other frequencies alone -directional improve sound source -digital computer on aid that processes incoming signal -cochlear implants  usually for children with severe hearing loss that stimulates the  auditory nerve directly -in the future: hope for stem cell regeneration Diagnostics Screening is preliminary test to determine whether or not you might have a hearing loss -Evaluation determines what the hearing loss might be -Conductive (middle/outer ear) -Sensorineural (cochlea or auditory pathway)
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-Case history, otoscopic evaluation, tympanogram, audiogram, word recognition word recognition: # of words you can correctly identify and words and words are  amplified to the point where you can hear them 
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Review 2 for Exam 1 - Review 2 for Exam 1 Sensorineural...

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