Intro+2014+Fall+--+Hearing

Intro+2014+Fall+--+Hearing

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Hearing / Hearing Impairment Yu-Hsiang Wu, MD, PhD Assistant Professor Department of Communication Sciences and Disorder
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What is Communication? The process of sharing information between two or more persons The transmission of thought or feelings from the mind of a speaker to the mind of the listener” (Borden, Harris, & Raphael, 1994)
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Modalities of Communication Describes the manner in which information conveyed via communication is transmitted and received. Speech (most common) Sign language Read / Write Gestures, pictures, and facial expressions
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Spoken Communication: Speech chain http://dspace.mit.edu
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How ears work? http://www.youtube.com/watch?v=flIAxGsV1 q0
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Outer Ear Middle Ear Inner Ear Auditory Nerve Brain Ear Drum Cochlea The ear consists of three main parts: www.advancedbionics.com/
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Type of hearing impairment Conductive hearing loss External and middle ear disorders Sensorineural hearing loss Inner ear disorders Mixed hearing loss http://www.fda.gov/Medical Devices/ProductsandMedical Procedures/HomeHealthandC onsumer/ConsumerProducts/ HearingAids/ucm184675.htm
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Incidence of hearing loss A pandemic is an outbreak of global proportions. An epidemic is when the number of people who become infected rises well beyond what is expected within a country or a part of a country.
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Incidence of hearing loss Hearing loss is the third most prevalent chronic health condition facing older adults (Collins, 1997) Next to cardiovascular diseases and orthopedic disorders.
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Incidence of hearing loss According to the National Institute on Deafness and Other Communication Disorders (NIDCD, 2010), 36 million Americans have a hearing loss this includes 17% of our adult population. In 2030, the population of those 65 and over in the U.S. is expected to be twice, increasing from 36 million to 71.5 million .
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Consequence of untreated hearing loss (for adults) Communication difficulty Depression Anxiety Isolation Paranoia Possibly, dementia Its economic costs are estimated to be in excess of 60 billion dollars annually (US).
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Hearing Loss and Dementia http://www.cbsnews.com/videos/study-loss- of-hearing-may-increase-risk-of-dementia/
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Case study: An infant with a sensorineural hearing loss
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Audiogram
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The Audiogram Audiogram: a graph that shows an individual s type and degree of hearing loss.
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The components of sounds Source: MED EL
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Loudness Soft to Loud Frequency Low Pitch to High Pitch “Speech banana” www.advancedbionics.com/
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x o o x x o o x x o Normal Hearing www.advancedbionics.com/
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