Lecture 6 Slides

Lecture 6 Slides - Sensorineural Hearing Loss What causes...

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Sensorineural Hearing Loss ± What causes sensorineural hearing loss? ± What are its effects on hearing? ± What is it like to have a sensorineural hearing loss? ± Why is important to screen infants for hearing loss? ± How do modern-day hearing aids work? ± How do cochlear implants work? ± Can sensorineural hearing loss be ‘cured’? ± What can I do to preserve my hearing? Sensorineural Hearing Loss ± Acoustic Trauma : Exposure to intense sound or to moderately intense sounds over long periods of time ± Presbyacusis : Hearing loss due to the aging process. Most Common Causes What causes sensorineural hearing loss? Tour Shearing force subjects delicate stereocillia to potential damage. Tour Stereocillia ± OHCs (A-C), IHCs (D-F) ± ± ± Stereocilia Damage What causes sensorineural hearing loss? ... Stereocilia Damage Effect of Everyday Noise Exposure Pure-Tone Thresholds of Natives of Easter Island Pure-Tone Threshold dB SPL 0.5 1.0 2.0 4.0 Frequency, kHz Away >5 yrs Away 3-5 yrs Never Left 70 40 10
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Lecture 6 Slides - Sensorineural Hearing Loss What causes...

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