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HEARING DISORDERS AND ASSISTED TECHNOLOGY AMPLIFICATION DEVICES C A R L Y C A S H , K R I S T I N S I N K , A L Y S S A M C M A N A W A Y, C H R I S C A S TA L D O , M AT T L E W I S , M A G G I E D E A C O N BIOLOGY OF HEARING http://youtu.be/0jyxhozq89g?t=34s HEARING DISORDERS - 4 TYPES Conductive hearing loss - Illnesses/obstructions in the outer/middle ear such as chronic ear infections that prevent sound from reaching the inner ear Sensorineural hearing loss - Damage to the sensitive hair cells inside the cochlea Mixed hearing loss - A combination of conductive and sensorineural hearing loss Central hearing loss - Damage to the auditory nerve that sends signals from the cochlea to the brain HEARING LOSS CAN BE: - Acquired - fluid build up behind the eardrum, chronic ear infections, childhood diseases (chicken pox, mumps, measles), head trauma - Congenital - Family history, infections during pregnancy (rubella), complications during pregnancy REFERENCES (2010) Deafness and Hearing Loss: Disability Fact Sheet #3. NICHCY Washington, DC. p. 1-6.