In the cochlea, the area where the function of inner hair cells or auditory neurons is degraded or completely lost is called the cochlear necrosis zone.It was Dr. Moore, a British audiologist, who first attracted people’s attention to this phenomenon, and then the academic community began to strengthen research on it.The phenomenon of cochlear necrosis can explain that some patients cannot get the same effective hearing rehabilitation even though the audiogram is the same.Experts believe that understanding the characteristics of cochlear necrosis will help hearing aid fitting and rehabilitation.
These researchers pointed out that there are many similarities between the audiograms of subjects who test positive for cochlear necrosis and those who test negative. However, in general, the high frequency hearing of patients with cochlear necrosis The threshold is worse than those without the symptoms.The speech recognition speedometer under noise (ie QSIN) is used to detect the speech recognition ability of a person in a multi-person noisy environment.
In general, the speech recognition test revealed the fact that when the high-frequency sound has more information and clues, people who test positive for the cochlear necrosis area do better; while subjects without the cochlear necrosis area do better. Get more verbal information from high-frequency acoustic cues.The researchers said that this study could not prove whether limiting or reducing the high-frequency gain of subjects who tested positive for the cochlear necrosis zone would be of any benefit to patients.Therefore, they suggest that clinicians should insist on providing patients with proven conventional measures.
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