Presbycusis is characterized as having difficulty hearing high pitched sounds such as birds chirping or a telephone ringing. However, it is much easier to hear lower pitched sounds such as a loud truck driving down the street.
Four Types:
*Sensory- Loss of sensory elements in the basal end of the cochlea
*Neural- Loss of cochlear neurons
*Striatal- Loss of stria vascularis as aging occurs
*Cochlear Conductive- Thickening of the basilar membrane caused by deposition of basophilic substances.
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