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Effects of noise on auditory organs
Sep 28, 2017

The effect of noise on the auditory organ is a process from physiological transition to pathology that causes pathological hearing impairment to reach a certain intensity and contact time. Long-term exposure to the more intense

The changes in auditory organ damage caused by noise are generally developed from permanent hearing threshold displacement to permanent hearing threshold displacement.

(1) temporary hearing threshold displacement. Temporary hearing threshold is a person or animal exposure to noise caused by a temporary hearing threshold changes, from the noise environment after a period of hearing can be restored to the original level.

(2) permanent hearing threshold displacement. Persistent hearing thresholds refer to noise or other harmful factors that cause hearing thresholds to rise and can not be restored to their original level. This is the case where the auditory organ has an organic change. Permanent hearing thresholds can be divided into hearing loss, noise deafness, and detonation acoustic damage.

(3) changes in cochlear morphology. Noise caused by the hearing system damage is the physical (mechanical mechanics), physiological, biochemical, metabolic and other factors combined results. Under the combined action of these factors, the hair cells can be damaged, severe Corti device (Ketie device) all disappeared or destroyed. Damage often occurs in the window from the oval window 9 ~ 13mm.


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