Download Hearing Disorders and Assisted Technology

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.