LING 209 Lecture Notes - Lecture 14: Hair Cell, Endolymph, Ototoxicity
Document Summary
Causes and significance of adult onset hearing loss. Hl is common around the age of 60 79 years, most of them are males. Interferes with the transfer or conduction of sound waves down the outer. Interferes with the inner ear"s job of changing mechanical vibrations into electrical or neural impulses. Prevents the neural signal from going up the auditory neural pathways to the temporal lobes. Abnormal bone tissue in the middle ear. Fixation of the stapes in the oval window, partially or completely preventing the transmission of sound waves into the cochlea. Typically begins in one ear and often appears in second ear later most common among women. Bone conduction hearing thresholds are equal to air conduction hearing thresholds. High enough sound level for long enough periods will cause slow, gradual, hl. High pitched hearing will be most affected. The louder the sound, the shorter the safe duration. Aging changes to many inner ear and neural structures.
