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Presbycusis - Essay Example

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Presbycusis Presbycusis (Date submitted) Presbycusis Alteration in the ability to hear may results in physical and psychosocial discomforts. It could be irritating to the people the affected person communicates with and so with the affected person which in returns limits conversations…
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Download file to see previous pages... The process of normal hearing starts when sound waves are conducted through the outer ear canal to the eardrum. The eardrum in return vibrates to set the malleus, the incus, and the stapes of the middle ear in motion. These three bones which terminate in the fluid filled opening within the inner ear particularly the snail like structure, cochlea responds to vibrations from the surroundings that are the basis of sound. The chain of command from these three bones triggers the fluid which relays the oscillating currents to the organ of corti. Currents are transferred with the help of the tiny hair projections lining the internal membrane of the cochlea and waving like the smooth underwater plants to move the sound that stimulates nerve endings. Thousands of these nerving endings which merge at the end of the cochlea unite to become the auditory nerve which carries nerve impulses to the hearing area of the cerebral cortex in the brain (Wagman, 1992). Presbycusis which is a progressive hearing loss is caused by defects in the outer, middle or inner ear. Presence of congenital deformities in the outer ear may interfere with the capture of sound waves from the environment that maybe funneled to the ear canal. ...Download file to see next pagesRead More
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