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Although research is limited, it suggests that increased exposure to loud noise through personal listening devices is a risk factor for noise induced hearing loss. [ 35 ] [ 36 ] A systematic review of adolescents and young adults reports that over half of the research subjects had been exposed to sound through music exposure on personal devices ...
Noise-induced and age-related hearing loss are the most common forms of hearing loss seen in adult patients and they often co-exist in the same patients. In collaboration with M. Charles Liberman and other researchers, Kujawa has examined the vulnerability of the synapses that connect hair cells in the cochlea to auditory nerve fibers.
Adults, as well as children, experience hearing loss if the sound intensity is loud enough. According to the NIH, data from 2005-2006 estimated that 17% of teenagers had noise-induced hearing loss ...
Noise-induced hearing loss is a permanent shift in pure-tone thresholds, resulting in sensorineural hearing loss. The severity of a threshold shift is dependent on duration and severity of noise exposure. Noise-induced threshold shifts are seen as a notch on an audiogram from 3000 to 6000 Hz, but most often at 4000 Hz. [16]
This could be an indication of noise-induced hearing loss before it is seen on an audiogram. In one study, a group of subjects with noise exposure was compared to a group of subjects with normal audiograms and a history of noise exposure, as well as a group of military recruits with no history of noise exposure and a normal audiogram. [14]
When the hearing loss is rooted from a traumatic occurrence, it may be classified as noise-induced hearing loss, or NIHL. There are two main types of auditory fatigue, short-term and long-term. [2] These are distinguished from each other by several characteristics listed individually below. Short-term fatigue